I have about 275 books boxed up in my grandma's garage in the US. That was the worst thing about moving here to Sweden. I'd say our bookshelves here in Sweden have about 300 books on them, but a good portion of those are in Swedish, which does me no good, and a good portion are repeats of books I already had, so they do me no good either. Moving in with a fellow book lover is a great way to expand a library, though. I highly recommend it. He has several series which I haven't read yet, but will eventually get to.
Caleyna