I would be hesitant of buying electronics off of E bay as you can get burned. I also don't see i pod touch prices going down as the i phone is subsidized by AT&T, in reality that is a $5oo to $600 phone, so don't expect i pod touches to drop in price, that and they are a big seller, supply and demand rules apply.
I would just buy the i pod touch from Apple and enjoy it, and when it is full you have saved money for the next one, because one is never enough you know.
