LOL, vienge!
Katamari Damacy traded in for $13.44 ($9.60 + 40% if they'll combine with edge) would make sense to do, as you probably aren't going to do much better selling on ebay even new, most likely even worse after all the fees. Presuming, that is, that the $9.60 value is universal and they haven't lowered the trade-in value ahead of this deal.