Amazon PPC Agency Cost Calculator
Most Amazon PPC agencies and tools charge a percentage of your ad spend — so the more you grow, the more they take. Enter your monthly ad spend and their rate to see the real annual difference versus a flat fee, and the exact spend level where percentage pricing starts working against you. Free, runs in your browser.
How much do Amazon PPC agencies charge?
Most charge a percentage of ad spend — commonly 5–20% — sometimes plus a minimum retainer. A few charge a flat monthly fee. The percentage model means your management cost rises automatically every time you scale your ads, even when the work does not.
Flat fee vs percentage of spend
At low ad spend, a small percentage can be cheaper than a flat fee. But there is a crossover point — above it, the percentage costs more every month and keeps climbing as you grow. This calculator shows exactly where that line is for your numbers.
Why % of ad spend punishes growth
If you double your profitable ad spend, a percentage-based fee doubles too — even though managing the account is not twice the work. You pay more precisely because you succeeded. A flat fee keeps your cost fixed while your sales climb.
Watch the word "spend" — most agencies charge on SALES
This is the detail that catches people, and it is the single most expensive thing to get wrong when you compare quotes. Software tools that take a percentage usually take it from your ad spend. Agencies typically take theirs from your sales — and on Amazon your sales are several times your spend. A "5% fee" therefore means something completely different depending on which number it attaches to. Read every quote for the noun, not just the percentage.
Two real quotes I was given
I priced agencies for my own Amazon brand before building this, and neither offer was a simple monthly number.
- The first wanted $2,000 up front, then $500 a month as a "software fee," then 5% of my current sales plus 5% of any additional sales they generated. Three separate charges, only one of which was tied to results.
- The second wanted $2,000 a month flat until I reached $20,000 in monthly sales, and 5% of sales after that. They pitched me using fabricated Amazon listings as their portfolio.
On my own account — roughly $4,700 a month in ad spend producing around $13,600 a month in ad-attributed sales — the first offer works out near $16,000 a year and the second near $24,000 a year. That is the comparison that made me stop shopping and start building. Our own Professional plan is $129 a month, which is $1,548 a year, and it does not move when the account grows.
For the full breakdown of how agency pricing models actually work, and when hiring one is genuinely the right call, read what Amazon PPC agencies really cost.
Frequently Asked Questions
- What does RedHen charge?
- A flat monthly fee for Amazon PPC management and profit tracking — never a percentage of your ad spend. A large seller pays the same flat fee as a small one.
- Is flat fee always cheaper?
- No. At very low spend a small percentage can be cheaper. The calculator is honest about the crossover point where flat fee wins and percentage pricing starts costing you more.