seodata.dev

keyword

used books online

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

$ curl "https://app.seodata.dev/v1/keyword?q=used+books+online&country=us" +--------------+------------------+ | volume | 74,000 | | cpc | $1.09 | | competition | 1 | | country | US | | updated | 2026-06-01 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword volume cpc overlap
used books 110,000 $1.07 20/20
online used bookstore 90,500 $1 20/20
used bookstore online 74,000 $1.09 20/20
used bookstores online 74,000 $1.09 20/20
books second hand 12,100 $1.08 20/20
second hand book 12,100 $1.08 20/20
second hand books 9,900 $1.07 20/20
used books for sale 9,900 $1.08 20/20
book thrift store 5,400 $0.59 20/20
used book stores online 5,400 $1.31 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=used+books+online&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