| Category name | Best seller rank | 50th book's rank | Median sales($) | Median price ($) | Volatility (%) | New releases (%) | Self pub.(%) | KDP Select (%) | Competition |
|---|---|---|---|---|---|---|---|---|---|
| Books > Humor & Entertainment > Puzzles & Games > Logic & Brain Teasers | 77 | 8,751 | $13,629 | |
85% | 0% | 30% | 0% | ~ 10,000 |
| Books > Medical Books > Medicine > Internal Medicine > Pathology > Diseases > Brain | 17,078 | 620,203 | $293 | |
100% | 20% | 75% | 20% | ~ 176 |
| Books > Health, Fitness & Dieting > Diseases & Physical Ailments > Cancer > Brain Cancer | 6,138 | 1,248,984 | $385 | |
90% | 20% | 35% | 10% | ~ 318 |
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