Does it matter? No, it really doesn't. I'm just curious, as someone who has a few hundred books sitting around the house, plus another 20-50 checked out from the library at any one time.

I don't know that I'd consider much of any books I own to be "quality". But the house I have does have a fairly nice built-in bookshelf that could probably hold 500 books all by itself. Someday I'll fill it, maybe? With mass-market paperbacks and hardbacks? "Quality" books? Who knows!