| Category name | Best seller rank | 50th book's rank | Median sales($) | Median price ($) | Volatility (%) | New releases (%) | Self pub.(%) | KDP Select (%) | Competition |
|---|---|---|---|---|---|---|---|---|---|
| Books > Engineering & Transportation > Transportation > Mass Transit | 8,986 | 417,820 | $526 | |
95% | 0% | 15% | 7% | ~ 2,000 |
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