I was at our local grocery/department store last night and I wandered through the electronics section as I'm known to do from time to time. I noticed that they had Guitar Hero: Aerosmith for the PS3 (game and wireless guitar) for $19.99. I had to double check with the clerk on this as they had Guitar Hero controllers for $49.99 on the shelf right next to it. The clerk said that they had a stock pile of them and were just trying to get rid of them. So for pretty darn cheap, I now have my PS3 guitar controller.
It took me a little bit to get used to the Guitar Hero controller again. It feels like the blue key is further apart from the one on the Rock Band controller. Once I got over that, I cruised through the first two sets (10 songs) on medium with no sweat.