KDSPY Review: Pricing, Pros and Cons for Authors

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Best for

Authors on a budget who want quick niche and competitor numbers while they browse Amazon.

Free trial

No free trial. 60-day money-back guarantee.

Runs on

Chrome, Firefox, Edge, Opera and Brave, Windows, Mac, Chromebook, Linux

What KDSPY does

KDSPY runs on top of an Amazon search or category page and estimates what the top books earn, how many sales a day you need to rank, and how crowded the niche is.

At $79 once, it is the cheapest paid research tool here. It covers fewer research jobs than Publisher Rocket, but it answers the question you ask most: is this niche worth it?

Category breakdown with estimated first-page earnings
Daily sales needed to rank #1 to #20
Keyword analysis with A to Z suggestions
Author analysis with sales rank and projected revenue
30-day sales rank and revenue tracking
Word clouds and data exports

KDSPY pricing

Lifetime license

$79 one-time (plus tax)

Pros and cons

What works

✓Lowest one-time price of the paid research tools
✓Works on any computer with a desktop browser
✓Long 60-day refund window

What does not

✗Browser only, nothing for phones or tablets
✗License covers two devices
✗No Amazon Ads keyword generator

Our verdict

KDSPY is the cheap way to check a niche before you write. Pair it with free keyword ideas from Amazon's search bar and you cover most pre-launch research for $79.

Check KDSPY pricing