I think you'll begin to see a lot more up for sale, once payment due dates come in for GB, Aliens, TBL. It's still early. From the looks of it though, used prices will be good or at least level off for a while. Too many options/supply will decrease demand and prices will have to stay competitive for sales to be made.
Initially, I was gonna jump and grab GB, however, I'm gonna give some more love to these older machines that will need new homes and probably pick up GB later this year or early next year.