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ACOS vs TACOS: Which One Actually Tells You If Your Book Business Is Profitable

ACOS vs TACOS: Which One Actually Tells You If Your Book Business Is Profitable

ACOS divides your ad spend by the retail sale price Amazon credits to your ads — money you never keep. TACOS divides it by the royalties your ads actually generated. Here is the difference, a worked example, how to read TACOS (100% is break-even), and why it is the only ad metric denominated in money you keep.

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Amazon Best Sellers Rank Explained: What Your BSR Actually Means in Sales

Amazon Best Sellers Rank Explained: What Your BSR Actually Means in Sales

BSR is a position in a race, not a sales counter — recalculated hourly, decaying without sales, separate for every format and every marketplace. Here is how the rank really works, roughly what different BSR levels mean in daily sales, and the mistakes authors make reading it.

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KDP Reports Explained: Dashboard, Royalties Estimator, Orders — and Which Numbers to Trust

KDP Reports Explained: Dashboard, Royalties Estimator, Orders — and Which Numbers to Trust

The KDP dashboard, the Royalties Estimator, the Orders report and the Payments report update at different speeds and measure different things — which is why they never quite agree. Here is what each report actually contains, how fresh each number really is, and the one that finally settles what you earned.

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