Sourcing English Language Novels (Personal Copies for Each Student)

I'm at a school where I have a little control over curriculum, and we kind of want to change to a different book for next academic year. I think my employer used something called Nellie's, but I think their experience wasn't great. I was just wondering if any of you knew of a good place to source English language editions of novels and not just one copy.

I know Japanese Amazon is an option, but when that's used, we can't see how many are in stock, so they may not have enough for all the students.

Ebooks are a possibility, but it sucks to have the kids use a screen and distraction machine for EVERYTHING.

by Prixmium