On one hand, $50 seems a bit much for something that looks almost identical to its predecessor. Yes, I know, it's totally different on the inside, but since there is very little change to the outside, it could be hard for some PS3 buyers to justify buying a couple of these.
On the other hand, maybe PS3 fanboys will stop bitching about the $40 Wii-mote + $20 Nunchuck now.
EDIT: I swear I didn't steal your format, Unoriginal. I was typing this before I saw your post.