What is the resale value of an ipod mini?

i have a 2nd generation ipod mini in blue. it is 4gb, works perfectly, and little scratches. I want to sell it to buy a new one. i have an itrip, a silicone case, and a leather case to sell with it. All the stuff that it came with is also with it. what would be a good starting price to put it on ebay for?