Really whatever you have, if it is priced right, it will have a chance of selling. However, you don't necessarily want to give the stuff away, especially if it is new and unused.
Be sure to check the TripleClicks website to see if others are selling the same thing and, if so, compare what you might hope to receive for the product to what they are asking for it. If it looks like you can be competitive with them, list it.
