How to Find Books to Flip
Sourcing is the whole game. Listing, packing, and shipping are mechanical — the margin is decided at the moment you decide which books go in the box. This guide covers where to source books, how to triage them on site, and how to judge whether a trip is worth the drive.
Where to source books
- Library & Friends of the Library sales
- The core source. Volunteer pricing means market value is ignored, so high-value non-fiction sits at $1. Multi-day sales end in a bag day.
- Year-round library bookstores
- Many Friends groups run a permanent shop inside the library with restocked shelves weekly — lower volume per visit, but repeatable.
- Thrift stores and charity shops
- Inconsistent pricing, but frequent restocks. Best when you can visit on a fixed weekly circuit.
- Estate and moving sales
- Whole collections at once. Specialist libraries (medicine, law, aviation, art) are the prize.
- School, church, and civic sales
- Rarely listed anywhere central; watch local community calendars and Facebook groups.
Book Sale Near Me tracks the first two categories nationwide. Search your ZIP code to see what is coming up, or check sales this weekend.
Triage on site
- Work the non-fiction tables first — textbooks, technical, medical, craft, religion, cookbooks. Fiction tables are picked last for a reason.
- Scan by ISBN and check both current offers and sales rank. Rank tells you how long your money sits on a shelf.
- Check condition fast: water damage, highlighting, ex-library stamps, and missing CDs or access codes kill otherwise good copies.
- Watch weight. Heavy books eat shipping margin unless the price supports it.
- Come back on the discount or bag day for volume titles you passed on at full price.
Do the math before you drive
A 90-mile round trip at current fuel prices can cost more than the books. Run the numbers with the sourcing trip calculator — it estimates fuel cost, mileage deduction, and how many books you need to buy to break even. Then check typical library sale prices so your cost assumptions are realistic.
Sourcing FAQs
- How do you find books to flip?
- Buy where books are priced by the pound rather than by market value: library and Friends of the Library sales, thrift stores, estate sales, church and school sales, and Goodwill outlet bins. Scan ISBNs on site to check current selling prices and sales rank before buying.
- How do I find cheap used books?
- Library book sales are the cheapest consistent source, with paperbacks at $0.25 to $1 and fill-a-bag days around $5. Search upcoming sales by ZIP code, then plan a route that hits several sales in one trip.
- What kinds of books sell best?
- Non-fiction with a narrow audience tends to outperform mass-market fiction: textbooks and academic titles, technical manuals, niche hobby and craft books, cookbooks by known authors, religious study material, and out-of-print or signed editions.
- How many books should I expect to buy per sale?
- That depends on the sale's size and how picked over it is. Estimate a break-even count for your own trip using distance, fuel price, and expected profit per book before you go.