| Category name | Best seller rank | 50th book's rank | Median sales($) | Median price ($) | Volatility (%) | New releases (%) | Self pub.(%) | KDP Select (%) | Competition |
|---|---|---|---|---|---|---|---|---|---|
| Kindle eBooks > Science & Math > Experiments, Instruments & Measurement | 37,605 | 167,593 | £153 | |
100% | 0% | 25% | 33% | ~ 4,000 |
| Kindle eBooks > Children's eBooks > Science, Nature & How It Works > Experiment & Projects | 49,558 | 560,764 | £111 | |
95% | 0% | 0% | 23% | ~ 617 |
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