[quote name='pwnthee']I looked forward to this game, but the $40 new price tag was a giant red flag. It's apparently a very short game. I've have been fine if they pushed it back a year or two if they'd have made it a more lengthy game. Probably an eventual rental for me, maybe even just $10 tops.[/QUOTE]
It's pretty average length (6-8 hours), but unless you care about the tougher difficulty level after beating it, or trophies, there wouldn't be much reason to replay outside of wanting to have fun with it again (but it'll probably be quite cheap by the time that urge comes back, if ever, so I only rented it).
They pushed it back enough since the original announcement years ago, and I think there's plenty here for a $40 MSRP game that actually utilizes motion controls well. That being said, I'm sure it'll drop at a decent rate and be sub-$20 later this year, which would be great value for it. If you're not the type to revisit games often (or at all), renting it is probably best.