| Category name | Best seller rank | 50th book's rank | Median sales($) | Median price ($) | Volatility (%) | New releases (%) | Self pub.(%) | KDP Select (%) | Competition |
|---|---|---|---|---|---|---|---|---|---|
| Children's Books > Science, Nature & How It Works > Astronomy & Space > Aeronautics & Space | 620 | 33,517 | $3,516 | |
100% | 0% | 25% | 0% | ~ 3,000 |
| Books > Science & Math > Astronomy & Space Science > Aeronautics & Astronautics | 3,614 | 61,905 | $3,792 | |
95% | 0% | 20% | 13% | ~ 10,000 |
| Books > Engineering & Transportation > Engineering > Aerospace > Astronautics & Space Flight | 1,629 | 173,843 | $1,589 | |
100% | 5% | 25% | 13% | ~ 4,000 |
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