It seems feasible if you don’t imagine they’re all big novels. A lot of nonfiction you might borrow several of in one visit and not read front to back. Think recipe books, handicrafts, anything along those lines. Could also be smaller things like children’s books, poetry collections, etc., or some of the books were unusually expensive.
Scoredle tells me after the fact that it was a sure thing, the path I was on, but man.