That's great news! We have a friends of the library bookstore here where we can get just about anything for 50 cents. Cheap books are the best things, aren't they?

By the way, another set of cheap, really good books are by Thornton Burgess. They're so old that they are in the public domain, but they still hold up really well. I've found the books are perfect for DS6, who's farther along academically but is still emotionally his own age. You can get them on Amazon for $2/$3 in book form. Or you can find them online and print them up for free and staple them in book form.