| Category name | Best seller rank | 50th book's rank | Median sales($) | Median price ($) | Volatility (%) | New releases (%) | Self pub.(%) | KDP Select (%) | Competition |
|---|---|---|---|---|---|---|---|---|---|
| Books > Fiction > Science Fiction > Space Opera | 83 | 3,477 | £2,172 | |
87% | 18% | 31% | 50% | ~ 30,000 |
| Books > Fiction > Science Fiction > Space Exploration | 112 | 5,154 | £1,086 | |
95% | 20% | 20% | 50% | ~ 7,000 |
| Books > Fiction > Science Fiction > Military > Space Fleet | 378 | 6,043 | £1,508 | |
85% | 25% | 50% | 77% | ~ 7,000 |
| Books > Children's Books > Science, Nature & How It Works > Astronomy | 662 | 8,999 | £1,646 | |
90% | 5% | 0% | 0% | ~ 7,000 |
| Books > Fiction > Science Fiction > Military > Space Marine | 351 | 10,559 | £1,081 | |
100% | 20% | 55% | 77% | ~ 6,000 |
| Books > Science & Nature > Astronomy & Cosmology > Astronomy | 568 | 19,347 | £588 | |
95% | 0% | 0% | 8% | ~ 50,000 |
| Books > Science & Nature > Astronomy & Cosmology | 552 | 22,964 | £1,328 | |
90% | 0% | 0% | 5% | ~ 60,000 |
| Books > Science & Nature > Reference > Astronomy & Cosmology | 1,038 | 26,950 | £486 | |
85% | 0% | 0% | 0% | ~ 6,000 |
| Books > Science & Nature > Popular Science > Astronomy | 892 | 36,193 | £610 | |
90% | 5% | 0% | 0% | ~ 1,000 |
| Books > Children's Books > Science, Nature & How It Works > Aeronautics & Space | 557 | 50,642 | £2,091 | |
95% | 0% | 0% | 0% | ~ 4,000 |
| Books > Science & Nature > Astronomy & Cosmology > Solar System | 3,814 | 64,565 | £256 | |
90% | 0% | 5% | 4% | ~ 2,000 |
| Books > Young Adult > Science & Technology > Astronomy | 2,569 | 74,865 | £617 | |
85% | 0% | 5% | 0% | ~ 1,000 |
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