Used books sell but it wholly depends on the condition of the book, the title, nonfiction
or fiction. Recent popular books do not sell well. Mysteries usually sell very well,
as do cookbooks, good history books, children's. Popular novels not so much. Buyers like their books in very good condition.
I know much about this because I have been buying and selling books all my life.
Maybe your neighborhood is not into reading that much, or they use the library.Big library users do not buy books.
The depreciation rate on books is huge and used book stores
usually give very little (dollar or less) so they can mark it up high and they are very picky.
People are still reading a lot
but you can buy a used book on Amazon for a few dollars or less (even a penny)