Ok, makes sense, but worth putting it up there so that it's clear how you will (and more importantly, won't) be making money so people can feel safe running the

Ok, makes sense, but worth putting it up there so that it's clear how you will (and more importantly, won't) be making money so people can feel safe running their bids through you. Also, make it clear when and how the payment part of the transaction happens -- that's not clear either.