I use https://www.bookfinder.com https://www.bookfinder.com to search for paper books. Sometimes I dropship them to a scan-service and for 20-30 USD I could get

I use https://www.bookfinder.com https://www.bookfinder.com to search for paper books. Sometimes I dropship them to a scan-service and for 20-30 USD I could get a decent PDF scan of the book. This has worked very well for older books too. Prices are much better than amazon and you save a book from the landfill.