The US Used Book Market: What 975 Million Amazon Sales Reveal (2016-2025)
Ten years of Amazon.com data: used book sales doubled to a 2024 peak, the penny book is nearly extinct, median prices are up 52% — and almost 11 million sales a year close above $20. The largest public data study of the US used book market.
How much is my book worth? How to find the real value of any book
Book value by ISBN, appraising old books without a barcode, the 4 factors that set the price, and what books are actually worth, shelf by shelf — the full method to find any book's value without falling for inflated asking prices.
Why do some used books gain value?
Scarcity, the long tail, an author's death, the Netflix effect, BookTok, censorship: the real mechanics that send used-book prices climbing — backed by data, with the method to spot the gems.
Reselling used books is basically running an index fund (except the margins are obscene)
Is book flipping an index fund? Diversification, the snowball effect, winners erasing losers. The portfolio lens that changes everything — with a real €80-margin case.
New or used books in the US, how the market actually decides
No fixed-price law, just 75 years of trade conventions and one weird Supreme Court tax case. How the line between new and used really gets drawn in the American book market.
US Used Book Market: Who Really Sells What, and Amazon's Actual Share
Amazon doesn't control 90% of US used books. Data-driven breakdown of a $5.29B market: ThriftBooks, eBay, AbeBooks, textbook flipping and the MFN antitrust story.
Where to Sell Old & Used Books: 21 Sites Compared (2026)
The same book checked on 21 buyback sites, then sold for 6x more. Real payouts, real screenshots.
How to Scan Books for Resale: Complete 2026 Guide
The complete method to scan fast, read the right signals, and stop letting an $80 book walk out for a $4 buyback offer. With a real-world case.
App comparisons
Our head-to-heads between BiblioScan and the other scanning apps, with real prices and the cases where a competitor is still the right pick.