seodata.dev

keyword

online books used

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

$ curl "https://app.seodata.dev/v1/keyword?q=online+books+used&country=us" +--------------+------------------+ | volume | 74,000 | | cpc | $1.04 | | competition | 0.59 | | country | US | | updated | 2026-06-06 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword volume cpc overlap
online used bookstore 90,500 $1 20/20
used books online 74,000 $1.09 20/20
used bookstore online 74,000 $1.09 20/20
used bookstores online 74,000 $1.09 20/20
used booksellers 27,100 $1.13 20/20
second hand book sites 3,600 $1.09 20/20
used book sites 3,600 $1.13 20/20
used books sites 3,600 $1.09 20/20
websites for used books 3,600 $1.09 20/20
used book shops online 2,900 $1.13 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=online+books+used&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 500/month, $4.99/mo unlimited

Full API spec: llms.txt