| Category name | Best seller rank | 50th book's rank | Median sales($) | Median price ($) | Volatility (%) | New releases (%) | Self pub.(%) | KDP Select (%) | Competition |
|---|---|---|---|---|---|---|---|---|---|
| Kindle eBooks > Professional & Technical > Transportation | 282 | 24,613 | £251 | |
90% | 10% | 5% | 27% | ~ 10,000 |
| Kindle eBooks > Professional & Technical > Transportation > Ships | 2,870 | 40,200 | £223 | |
100% | 20% | 10% | 60% | ~ 2,000 |
| Kindle eBooks > Professional & Technical > Transportation > Aviation | 3,106 | 131,874 | £104 | |
85% | 10% | 5% | 23% | ~ 4,000 |
| Kindle eBooks > Professional & Technical > Transportation > Railways | 2,626 | 136,319 | £83 | |
95% | 0% | 5% | 40% | ~ 2,000 |
| Kindle eBooks > Professional & Technical > Transportation > Reference | 48,321 | 464,307 | £139 | |
100% | 10% | 20% | 23% | N/A |
| Kindle eBooks > Professional & Technical > Transportation > Mass Transit | 36,476 | 466,875 | £154 | |
100% | 5% | 20% | 30% | ~ 783 |
| Kindle eBooks > eBooks in Foreign Languages > Arabic > Engineering & Transportation | 1,878,603 | 2,638,678 | £0 | |
100% | 0% | 75% | 0% | ~ 125 |
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