| Category name | Best seller rank | 50th book's rank | Median sales($) | Median price ($) | Volatility (%) | New releases (%) | Self pub.(%) | KDP Select (%) | Competition |
|---|---|---|---|---|---|---|---|---|---|
| Books > Medical Books > Medicine > Internal Medicine > Radiology > Ultrasonography | 20,963 | 333,304 | $2,272 | |
95% | 5% | 25% | 0% | ~ 1,000 |
| Books > Textbooks > Medicine & Health Sciences > Medicine > Diagnostics & Labs > Ultrasonography | 111,239 | 1,828,600 | $0 | |
100% | 5% | 20% | 0% | ~ 792 |
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