You go the used bookstore route if you can. One of the ones where you trade in books for 1/4 cover and buy at 1/2 cover. It stretches things.

I would try the website of every major city library system and see if any do non-resident cards.

Also at a certain point you give up and start reading what the library stocks. This is why I went on a giant mystery and thriller bender in high school/college. I could not find fantasy but mysteries, thrillers, and romances had a lot of space.