Sudoku Books scored 70/100 demand and 8/100 competition in nichedata.dev's KDP intelligence index.
Quieter demand but very low competition — could work as a long-tail play or a sub-series anchor.
At a glance
| Metric | Value |
|---|---|
| Demand score | 70 / 100 |
| Competition score | 8 / 100 |
| Monthly searches | 6,600 |
| Average book price | $8.30 |
| Reviews to rank competitively | ~1,705 |
Pull this programmatically
If you're building an automation or AI agent for KDP research, the data above is one HTTP request away — no API key, no signup, just x402 USDC micropayments on Base.
# Free preview (demand score only)
curl https://nichedata.dev/v1/preview/sudoku-books
# Full intelligence (paid via x402, $0.03 USDC for cached keywords)
curl https://nichedata.dev/v1/niche/sudoku-books
OpenAPI spec: nichedata.dev/openapi.json · MCP server: nichedata.dev/mcp · x402 manifest: .well-known/x402
Niche of the Day is generated daily from nichedata.dev's cached KDP corpus. Data freshens weekly via the nightly research pipeline. Browse all niches →
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