| Category name | Best seller rank | 50th book's rank | Median sales($) | Median price ($) | Volatility (%) | New releases (%) | Self pub.(%) | KDP Select (%) | Competition |
|---|---|---|---|---|---|---|---|---|---|
| Books > Mind, Body & Spirit > Paranormal & Unexplained Phenomena > UFOs | 5,482 | 267,695 | £280 | |
93% | 25% | 43% | 25% | ~ 6,000 |
| Books > Science & Nature > Astronomy & Cosmology > UFOs & Extraterrestrial Life | 32,641 | 1,172,588 | £0 | |
95% | 5% | 30% | 0% | ~ 412 |
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