The most popular and profitable genres are self-help, cookbooks, young adult fiction, children's books, classics, and non-fiction categories like business, health, and home improvement.
Check thrift stores, library sales, used book stores, yard sales, estate sales, and online sites like eBay. Focus on newer books in good condition published in the last few years.
FBA (Fulfillment by Amazon) is recommended since Amazon handles storage, picking/packing, and shipping for you. This also makes items Prime eligible so they sell faster.
Seller fees include referral fees on each sale (around 15%) plus FBA fees for storage/fulfillment if using FBA. You also need upfront inventory costs, but overhead is low.
Yes, you can make good profits on used books if you source them at very low costs from library sales, thrift stores, etc. Focus on popular titles in good condition.
It takes 1-2 weeks to register as a seller, create listings, and ship inventory to Amazon. You can start getting sales almost immediately after inventory is received by Amazon.
Analyze your daily and monthly sales, Best Seller Rank, reviews, inventory turnover rate, and profit margins on different books to improve over time.