keyword

books for sale

Monthly search volume and cost-per-click data for "books for sale" in US.

$ curl "https://app.seodata.dev/v1/keyword?q=books+for+sale&country=us" +--------------+------------------+ | volume | 3,600 | | cpc | $0.99 | | competition | 1 | | country | US | | updated | 2026-05-21 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword	volume	cpc	overlap
used books	110,000	$1.13	20/20
online used bookstore	90,500	$1	20/20
used books online	74,000	$1.09	20/20
buying books online	18,100	$1.92	20/20
buy books online	12,100	$1.8	20/20
book seller online	9,900	$1.32	20/20
online book shopping	9,900	$3.17	20/20
second hand books	9,900	$1.07	20/20
used books for sale	9,900	$1.08	20/20
book store online	6,600	$1.75	20/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://app.seodata.dev/v1/keyword?q=books+for+sale&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 1,000/month

Full API spec: llms.txt