While I liked the idea of the "swap" the headache of a "sale" was more than I wanted to take on. I decided that the leftover books would instead be donated to local reading programs. Last year we brought in just over 1200 books, not too shabby for something thrown together the last few weeks of school. This year we brought in just over 1500 books.
Yesterday we dropped off over 700 books to a local outreach program. This is such an easy was for kids to give back and make a difference. If this sounds like a project you want to try, feel free to email me and I can give you give some "tricks of the trade".