I got to your point and checked through my backlog and checked their TiV. If the game wasn't absolutely one I wanted to keep (FO3 GOTY, OBLIV 5 year, DA:O UE) then any game that Traded in for more after bonuses I traded.
I figure if I haven't gotten to it yet I can always find it cheaper later.
I did that with final fantasy 13. I know I'm not going to play it anytime soon but if I don't have anything to play for what ever reason I know it will be dirt cheap when I re buy it