Is there any website that can get you used physical books for cheaper price? I have tried Abebooks in the past but now they have been charging a lot for shipping. I am trying FB marketplace these days but so far I found very limited options and you have to drive a lot to get these. Thank you in advance for your suggestions.
Library book sales or other places that accept donated books, locally the art museum also runs a yearly book sale.
Used bookstores sometimes have a clearance shelf.
eBay sometimes you can find someone just selling a grab bag of books for cheap, the shipping could add up though.
Find your local recycling center, one of local ones takes books and puts them up on a free shelf for a period, if no one takes them they recycle the paper.