| Category name | Best seller rank | 50th book's rank | Median sales($) | Median price ($) | Volatility (%) | New releases (%) | Self pub.(%) | KDP Select (%) | Competition |
|---|---|---|---|---|---|---|---|---|---|
| Kindle eBooks > Engineering & Transportation > Engineering > Mechanical | 8,252 | 248,210 | $279 | |
100% | 15% | 25% | 30% | ~ 10,000 |
| Kindle eBooks > Engineering & Transportation > Engineering > Mechanical > Robotics | 9,792 | 696,848 | $272 | |
95% | 31% | 55% | 33% | ~ 2,000 |
| Kindle eBooks > Engineering & Transportation > Engineering > Mechanical > Automation | 7,970 | 758,784 | $279 | |
90% | 10% | 20% | 30% | ~ 2,000 |
| Kindle eBooks > Engineering & Transportation > Engineering > Mechanical > Drafting & Mechanical Drawing | 151,683 | 1,007,661 | $0 | |
100% | 15% | 50% | 43% | ~ 488 |
| Kindle eBooks > Engineering & Transportation > Engineering > Mechanical > Hydraulics | 153,987 | 1,305,860 | $0 | |
100% | 0% | 55% | 33% | ~ 1,000 |
| Kindle eBooks > Engineering & Transportation > Engineering > Mechanical > Fracture Mechanics | 455,601 | 4,034,042 | $0 | |
100% | 5% | 75% | 33% | ~ 195 |
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