It looks like Amazon has dropped Split/Second by $10, although the $10 credit is no longer around.
PS3
http://www.amazon.com/Split-Second-..._2?ie=UTF8&s=videogames&qid=1274619387&sr=1-2
360
http://www.amazon.com/Split-Second-..._1?ie=UTF8&s=videogames&qid=1274619689&sr=1-1
PS3
http://www.amazon.com/Split-Second-..._2?ie=UTF8&s=videogames&qid=1274619387&sr=1-2
360
http://www.amazon.com/Split-Second-..._1?ie=UTF8&s=videogames&qid=1274619689&sr=1-1