The PS3 version is sold out on a variety of shops in the US. Amazon as well as some best price stores state that they don't have any game more to sell and they were all sold within the first 24 hours.
Bioware meanwhile appeals to the players to list all stores where you still can buy the PS3 version of this game.
I already tried it on the PS3 and must say it looks nearly the same way than on my PC. The control of the character for me on that controller is a bit easier than on the keyboard - but tastes vary