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Amazon PPC Costs

The 2.5 Rule – How to Quickly Estimate Your Product’s Amazon PPC Costs

Ever since sellers started selling through Amazon FBA and earning the lives they know they deserve, they’ve wanted to learn how to accurately predict the future profits. After all, what’s better than an investment or business where you know almost down to the penny how much you will earn? And thanks to applications like Jungle Scout and Extension, tens of thousands of Amazon FBA sellers have done just that. However, one major cost estimation has long been a mystery: Amazon PPC costs.

Until now.

In this article, I’m going to teach you how to estimate your Amazon PPC costs using a fast and simple trick called the 2.5 Rule. This Rule will not only help you predict what your future Amazon PPC costs will be, but it will also give you an edge on your competition and potentially double your profits.

What is the 2.5 Rule?

The 2.5 Rule is a method of predicting Amazon PPC costs using a little math and a cool tool we call Keyword Scout. First, understand that it operates on a few assumptions:

  1. You are selling or going to sell a product on Amazon priced between $18-$30.
  2. The product has the typical Amazon conversion rate of 10%. That means for every 10 people who click on your product, 1 of those people makes a purchase.
  3. Your target ACoS is 25% of your sales price.

If you follow our guidelines for research and sourcing profitable Amazon FBA products, then all three of these assumptions should be correct.

Now that you understand these assumptions, here is how the 2.5 Rule works…

When researching keywords for your Amazon PPC ads, each keyword should cost no more than 2.5% of the product’s sales price.


For example: say you’re selling a long-handle garlic press for $27.95. You discover that the Amazon PPC costs to get your product to the first page of search results for the keyword “long-handle garlic press” is $0.56 per click. $0.56 per click is less than 2.5% of your sales price. Therefore, that is a good keyword to target.

Another example: you’re still selling the long-handle garlic press for $27.95. This time, you want to go for the broader keyword “garlic press” minus the “long-handle.” It’s a more competitive keyword, costing $1.23 per click. That’s 4.4% of your sales price. So that might not be the best keyword to target, especially if you want to get a healthy profit margin.


Ideal Amazon FBA Product Margins


How is the 2.5 Rule calculated?

The math is quite simple. If you are selling a product on Amazon that has a 10 percent conversion rate, that means it takes on average 10 clicks to make a sale. If your target ACoS (actual cost of sales) is 25% of the total sales price, then your average Amazon PPC costs need to be 2.5% of the total sales price. Here’s the long version for the formula for calculating it.

The Long Version

PRICE x 25% = Target ACoS

Target ACoS / 10 Clicks = 2.5%

Amazon PPC Costs = 2.5% of Total Sales Price

But all you need to do is this:

The Short Version

PRICE x 2.5% = Your Target Amazon PPC Costs

In other words, simply multiply your product’s sales price by 0.025 and presto! You have your target Amazon PPC Costs.


How can I predict Amazon PPC Costs in advance?

The easiest way to predict Amazon PPC Costs is through Jungle Scout’s Keyword Scout tool. Keyword Scout actually gives you real live Amazon PPC Costs taken directly from Amazon.

Here’s how it works:

1 – Login to Jungle Scout.

2 – Once in, click on the Keyword Scout tab.

3 – In the search bar, enter a search term or ASIN that you wish to research Amazon PPC costs for.

4 – When the results load, review the keywords provided and the Amazon PPC costs.

It’s really that simple and only takes a few seconds.


How do I build a keyword list using the 2.5 Rule?

Now that you’ve used Keyword Scout to perform Amazon PPC Costs research, you’ll want to select the keywords that will not only get your product seen by more shoppers, but also keep your ACoS below 25%. IE less than 2.5% per click.

One easy way to build this list is by sorting the list of keywords provided by Keyword Scout in ascending order of Exact PPC costs. From there, simply start copying down (or exporting using the CSV tool) all of  the keywords that are less than 2.5% of your product’s sales price.

For example, you can see that we have “garlic tools kitchen”, “garlic storage”, and “stainless steel ginger grater” as good potential keywords for our garlic press. Each has a cost per click less than 2.5% of our target $27.95 sales price.


How do I know if a product is too competitive using the 2.5 Rule?

Another benefit of using Keyword Scout and the 2.5 Rule is knowing whether or not a product is too competitive. You may have noticed from our list of keywords under 2.5% of our target sales price, those keywords have relatively low search volumes. This is probably a signal that garlic presses are far too competitive on Amazon. Extension confirms this giving it an Opportunity Score of 4 “High Demand with High Competition.”

As a rule of thumb, you might try to get the sum of the search volume for each of your 2.5 Rule keywords to be 3,000+ monthly searches. Any less than that, and you might find it difficult to move inventory. Furthermore, try not to leverage the monthly searches on only one keyword, especially if it’s something obvious or short tail.


Can I raise my product’s price to meet the 2.5 Rule?

Obviously, raising your product’s price beyond your initial target sales price will make your margin for Amazon PPC Costs much wider. For example, if I raised my garlic press’ price by $10 to $37.95, that would make my target Amazon PPC Costs $0.95 per click. That’s a much easier margin to work with!

However, raising your price too high above your competitors’ prices might lower your conversion rate significantly. So, instead of selling a product every 10 clicks, it may take 15 to 20 clicks to sell your product. At that point, the 2.5 Rule doesn’t work as well.

I recommend keeping your sales price no more than 30% higher or lower than the average sales price. So if garlic presses are selling for $25 on average on Amazon, your price should be somewhere between $17.50 and $32.50.


A few more tips for estimating Amazon PPC costs.

Of course, the 2.5 Rule is a good basic rule of thumb and may not be a silver bullet for every seller. Here’s a few more things to consider when estimating your Amazon PPC costs:

Higher prices equals lower conversion rates.

Try to learn what your average conversion rate will be before pricing out your Amazon PPC ads. The lower your conversion rate, the more clicks it takes. Here’s a quick cheat sheet for conversion rates and clicks.

  • 20% conversion rate = 1 sale per 5 clicks
  • 15% conversion rate = 1 sale per 7 clicks
  • 10% conversion rate = 1 sale per 10 clicks
  • 5% conversion rate = 1 sale per 20 clicks
  • 2% conversion rate = 1 sale per 50 clicks

Your target ACoS doesn’t have to be 25%.

Once you subtract your Amazon fees and costs of goods sold, you might have a larger gross margin to work with than others. In this case, you can always raise your target ACoS above 25%. Just remember that the bigger your ACoS is, the less profit you’ll make. So if you have a gross margin of 50% after fees and product costs and decide to target a 40% ACoS, that only leaves 10% for your profit margin!

Generate Amazon Keyword Reports.

Amazon keyword reports will help you get even more accurate details on costs per click and conversion ratesYou should run these reports at least once a week for a few months after launching a product. You can find your keyword reports in Amazon Seller Central > Reports > Advertising Reports.

ABR – Always Be Researching.

Use Keyword Scout frequently to find new keywords. Remember, Keyword Scout generates a list of keywords based on keywords and ASINs that you enter in the search box. Eventually your keyword reports will direct you to your highest converting keywords. So, take those words and put them into Keyword Scout again. Bam! A whole new set of ultra-relevant keywords emerge, ready for you to put them into your Amazon PPC campaigns. Keep this up for a year and you’ll find yourself with a massive list of high converting, long tail keywords.

The seller who continues to do Amazon keyword research and track their Amazon PPC costs is the seller who ends up dominating their category and earning the highest profits.

NOTE: Once your product is live, you can track your PPC spend using
Jungle Scout’s Sales Analytics feature.


How do I get Keyword Scout?

Keyword Scout is part of Jungle Scout’s suite of tools. If you already have access to the Jungle Scout Web then good news. You already have Keyword Scout!

To learn more about Jungle Scout, click here.



31 comments on “The 2.5 Rule – How to Quickly Estimate Your Product’s Amazon PPC Costs

    1. Hi Jin,

      You cannot estimate your conversion rate. Your conversion rate is based on many factors so it would be difficult to estimate.

      You need to measure and make adjustments as your product sells.

  1. Bravo !

    first time, ever, I know exactly: How it works?
    All books, ppc specialists, online courses, high expensive seminars DIDN’T ever been able to explain it like here explained.
    I am just preparing my self with help by NEIL ASHER AOE to start AMAZON.
    With your PPC I am so confident now !


  2. So if factoring in 25% for ACOS, it seems in the example provided this assumes 100% of the products available for sale will be sold via PPC. How do organic sales get factored in? Also in the example of the $28 product several costs are not included—-product inspection, product shipping, product customs fees, product photography, product listing optimization/launch support(if used).

    Also, am slightly confused on the 25% versus 2.5%. If I am estimating the total cost of PPC for a 1,000 unit order, for a $30 product…..I would calculate the total PPC cost as : 1,000 x $30=$30,000 x 25%=$7,500. Believe this is correct—yes? But not all sales will be tied to PPC so in my example, the $7,500 would be overstated. In a product I launched in late October, looks like 50% or so of sales are organic–not tied/influenced by any of the ad campaigns run.



    1. Hey Bob,

      Great questions. If you look at all of your sales overall, naturally the cost for PPC will go down. However, you want to try to keep your individual costs per unit at the 25% mark.

      So here’s how to think of it in terms of the math.

      You have one widget with a price of $30. The cost of goods sold is 10%, so $2. Amazon’s fees come out to be a total of 30% of the price, so $9. If you make your total ads 25%, that’s $7.50.

      Ads are done by click. So each click has a cost. Ideally, you want the number of clicks that a single product has to be no more than 10. That means a 10% conversion rate (one out of every ten clicks results in a sale). So if you divide the $7.50 by 10 clicks, that’s $0.75 per click, or 2.5% of the product’s price.

  3. Hi, I am a small individual businessman or say a proprietor. As per Amazon vision, they told when expanding across the Globe that their business model is more to develop and give business to small traders unlike big brand companies also sell products with huge marketing budgets. For us, even an extra PPC (non-convert into sales) give big loss. In that scenario How can we overcome this trap? Using keywords search paid tools to invest in paid Amazon sponsored ads? If I sell $10 product as a reseller and earn a profit of $2 only a day unlike the big manufacturer or brand selling the same kind of products on Amazon at &1-$2 with a big marketing plan to sell 100 plus units a day. How we will survive long?

  4. Dave, Thank you for covering this topic.

    The typical suggested strategy for launching a product on Amazon is to use paid advertising including Amazon PPC heavily during the initial launch phase to gain ranking in the natural SERPs and then to slowly pull back and reduce paid advertising as your natural SERP rankings deliver an increasingly large percentage of total sales. Under this model, it seems to me that you would have an ACoS that would reduce over time to a fraction of 25%. For example, at some mature phase, you might be doing only 30% of your total order through Amazon PPC (and 70% through the natural SERPs), giving you an ACoS of say, 7.5% (i.e. 30% of orders at 25% ACos and 70% at 0% ACoS).

    What’s confusing me is that it seems like you have a different model entirely, which is an ultra-high product margin (i.e. ultira-low product cost), but an ever-persistent high ACoS, as there as there is no assumption about natural traffic from the Amazon SERPs. It is basically a 100% paid advertising-based model (i.e. all or virtually all sales from advertising) that can be sustained for a long time because of high product margins.

    Any comments on this issue you can offer? Did I correctly characterize your model? Which model is superior? WHy not shoot for natural rankings? And if you do, won’t ACoS end up a lot lower a few months after launch?


    1. Ajay,

      Great observation and great questions.

      That is correct. A few of us here at Jungle Scout actually use this model. I typically go for products in the $25+ price range. While my volume is lower, it allows me to better utilize PPC. Plus, my COGs is much lower because I don’t need to carry as much inventory (when considering a Inventory Turnover rate of 3x).

      These days, I also use a few other strategies, including outside social media marketing and Kickstarter. But these tend to be advanced strategies which I hope to build upon in later articles.

      I hope that’s helpful!

  5. Hi Dave,

    Interesting, informative and great read.

    Have a question regarding ACoS, you refer to it as ‘actual cost of sales’. I assumed it stood for ‘advertising cost of sales’.

    Not sure if there are two different meanings? I would be much obliged if you could you explain exactly what both mean, not exactly sure myself yet.

    Thanks in advance,

  6. Dave,
    I appreciate your insights… very helpful. I am fairly recent to Amazon. I fulfill my own orders, I do not FBA. I make gourmet, made-to-order cookies. Amazon is THE spending platform, so I’m on it. Not having great success. I have to compete in PPC with Walkers, Nabisco, other well-funded players. Really starting from scratch…. can’t have reviews unless I sell etc. I’m not an OREO kind of mass product…

  7. Hi, great article.

    Is there a tool like this for the UK? When I go on the Keyword scout on Junglescout, it only lets me select the US market.

    My product will be selling for around £25 on the UK market (around $32) as I’m offering a much higher quality version of the product compared to competitors. The average price on Junglescout for most keywords related to my product is around £15. The current sales to reviews is 360 to 149 what do you guys think my PPC will be?


  8. Hi Dave

    I have JungleScout Web App, but I cant simply change the country from US to UK in KeywordScout. All other countries are disabled. Do we know why are they disabled?

  9. This is a very informative and helpful article, thankyou. However, are we really expected to believe that the opportunity exists in todays Amazon landscape to purchase products for $2.80 and sell them for $28!? I do not know of a single retail operation, major or minor, who achieves margins such as these. A $2.80 product will typically be being sold already in a retail environment for around $12 depending on the tax, with direct importing retailers being even more competitive still.
    I understand that your example is a perfect case scenario, but can we really offer that up as a remotely realistic proposition!?

    1. Hi Jon,

      Yeah, the opportunity still exists, so long as you’re not trying to compete on price alone. My latest product I just purchased for $3.50 and I’m selling for $30+. And one of my mates does the same, but for $50+. If you find a good enough market or your product is marketed very well, it is possible.

  10. Hi David,

    Thanks for the information. It really helped me pick out which keywords would work with the profit margins I am seeking. I did have a question though. This formula seems like it is good for predicting the cost of PPC or HSA per unit. If I am trying to estimate how much the total cost of PPC per month will be, and not just per unit…would it be more accurate to multiply the PPC by average sales or by 10% of exact match search volume?

    1. Hey Nicole,

      PPC usually is a percentage of your total sales (or should be). And keep in mind that it often comes out of your payments, so you never actually have to pay it forward.

      But if you were expecting $3,000, just make it a percentage of that value, say 25% or so to be safe.

  11. Looking at the Ideal Amazon FBA Product Margin graphic, I have a few questions:

    1. I’ve looked at hundreds of products to date. I cannot meet the Amazon combined Fee of 25.6%(based on your graphic) at price points that are below a certain amount. I don’t know how sellers who sell products under $20 make any money. For instance, a product that weighs only 1.3 pounds and sells for $14.99 has an FBA cost of $5.63 and a Referral Fee cost of $2.25. That’s almost 50% of the price of the unit. QUESTION: How do you find products that meet the 25.8% target in your graphic?

    2. Cost of Goods: Where did you get this number from?
    3. What do you consider a good profit on an item? That’s worth the time and effort to research, ship, build the product page for, etc?

    Thanks again Dave!

    1. Hey James,

      1) Yeah, if you’re selling below $20, it’s going to be tough to hit that number. I recommend looking at products that are made out of steel, leather, and wood. Usually, they have a higher perceived price and a relatively low cost. Silicone, plastic, glass all tend to go for cheap. And try to stay away from stuff that weighs over 1 lbs. $3.19 is where you want your FBA fees to be. Also, the average price doesn’t mean the price you’ll sell for. I look for stuff that I think I can sell for $30 or more and weigh less than one pound.
      2) Experience mostly, and glancing at Alibaba’s SERP.
      3) I’m more interested in ROI than anything. If I can buy a chunk of products for $2000 and earn $15,000 net in the first 12-months, that makes me happy regardless of how many I sell. For margins, I tend to see 30-35% of my current product line-up, but I’m happy if it’s anything north of 20%.

      Hope that’s helpful!

  12. Dave,

    I see what your saying about the rule of thumb. Thanks to your 2.5% rule of thumb I’ve realized that a few of the products I was looking at were ultra competitive even though they looked like a good opportunity on the chrome extension. Expensive PPC would have been the last thing I needed especially since I am just starting out.

    1. Yeah, ad costs is a dead giveaway if a category is too expensive. You CAN succeed without using ads, but it requires a whoooole lot of giveaways using super URLs. Some sellers use that as their strategy, but in my opinion it’s a lot of work for not a lot of return. I prefer higher priced products with fatter margins sold at lower volumes (so I don’t have to spend as much on an initial order).

  13. Hello Dave,

    Your blogs are so helpful! Seriously don’t stop I love reading them. I have a question about something you said. You say to “try to learn what your average conversion rate will be before pricing out your Amazon PPC ads.” How do you do this?

    1. Hey Craig,

      Well, starting out it’s pretty tough to guess it, obviously. But I find that most conversion rates for products under $25 are typically around 10% (unit/session percentage that is). Sometimes it’s better, sometimes it’s worse. So the 2.5 Rule is more of a “rule of thumb” since 10% CVR = 10 clicks per sale. And if your ACoS is 25%, then 25%/10 = 2.5%.

      Does that make sense?

      Once you know your real CVR, though, you can adjust accordingly.

  14. Dave,
    A great article as always. I’m trying to understand the long game here with regards to ppc:
    – Is it that we are forever adding new keywords to our ppc campaign, with the ultimate goal of having a small group of low acos keywords ? Or is it that my high acos keywords today, will not be my high acos keywords 2 years from now, because the market evolves ?
    – How do events like Prime Day and holiday shopping affect ppc ? My observation is that everything goes out of whack. For example, in the weeks leading up to Prime Day, I’ve had to bump up bids just to get impressions, and that’s thrown off my acos too. Is this your experience as well ?


    1. Hey YP,

      Thanks for the kind words!

      1) Yes on both parts! Haha… sorry if that’s vague. But yeah, we always want to keep optimizing ads. Because search trends change. And eventually, as new people come in to sell similar products to your own, some keywords will get less while others become more.

      2) It affects it quite a bit. As I write this, my PPC costs are through the roof because of Prime Day. However, conversions go up, too, so while your CPC ends up being more, it takes less clicks to get a sale. A lot of people right are adding stuff to their cart in anticipation of making bulk purchases on Prime day, too. Same thing happens around the holidays. You burn a lot of PPC in October/November and then it all comes rushing out in December.

      Hope that’s helpful!

      1. Dave,
        Really interesting answers. And really helpful for me. It seems like ppc is essentially about continuous improvement (constantly monitoring and adding keywords, and related metrics like acos). My only thought there is that it takes some time for acos to settle and trend downwards, so I am concerned about profitability if we are always tinkering with our ppc campaign.

        Would you say that optimization must involve adding all those new keywords to our listing as well over the years?

        Another thing I wanted to share is that I launched another product at the end of June, and despite high discounts on jump send, people seem to be requesting (and getting) coupons from me, but not really using them or adding to cart. Its been extremely frustrating, but I suspect they are holding on to these for prime day. Or I am missing something entirely. Either way, I run my coupons so that they expire week to week, to minimize any abuse. Just wondering if you’ve seen that sort of thing before.

        I really appreciate you taking the time to answer our questions given all the other demands on your time!

        1. YP,

          It took me about 3 months to get my ACoS down and my margins around 35%. And that was on a product priced at $22.50. But it hasn’t stopped me from continuing to do research, review keyword lists, and add and remove keywords.

          Not sure on why coupons weren’t being used. And you could be right–it could be people waiting for Prime Day. Or just getting distracted.

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