Used prices didn't drop so $9 used
PS3
http://www.gamestop.com/ps3/games/red-faction-armageddon/78038
X360
http://www.gamestop.com/xbox-360/games/red-faction-armageddon/78048
PS3
http://www.gamestop.com/ps3/games/red-faction-armageddon/78038
X360
http://www.gamestop.com/xbox-360/games/red-faction-armageddon/78048