| 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 > Technology & Engineering > Lasers & Photonics | 473,254 | 2,148,461 | £0 | |
100% | 0% | 30% | 20% | ~ 1,000 |
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