I did one last batch of trades for the 4/$20 promo today, here's the values(all for ):

Values are listed base, with EDGE/promo bump in ( ):

Battlefield: Bad Company-$5.75($11.33)
Bionic Commando-$3($8.30)
Heavenly Sword-$8.25($14.07)
WET-$7.00($12.70)