Hey Sparks - Call your local fire stations. A lot of them will trade in old car seats for new ones. Check around - if they don't do it, they should be able to tell you who to call or who does it. They don't want you to sell or reuse old car seats since they expire (the foam wears down after a few years) and you never know if they were involved in an accident.
Faith is, at one and the same time, absolutely necessary and altogether impossible. --Stanislaw Lem