say exactly what you have and are selling...then let people bid on it...
whenever you think its enough, say OK, ill sell to you...
The buyer gives the gp to an MM...and then you send the xbox to the buyer (you need his address and info, and also access to a post office/Fed Ex store)
Make sure you get the package insured so you can be certain the buyer got the package...
Then, whenever the MM gets confirmation that the buyer has the xbox, the MM gives you the gp...
