I bought nine games at Toys "R" Us today, some for me, some for family. I checked Amazon's posted games, and couldn't find three sets of games in any consistent price range, and the discounts weren't high enough otherwise.
The games:
Resident Evil 5 (Sister and Bro.-in-law haven't played any RE, but like horror, so should enjoy it, I hope)
Beatles Rock Band Wii (Not worth $60 to me, but B2G1 makes it worth it)
Katamari Forever (For when my roommate gets his PS3)
Guitar Hero Metallica (Again, not worth normal full price)
TMNT: Smash Up (See above)
A Boy and His Blob (Hopefully good and worth full price

)
Rock Band 2
Rock Band Country Track Pack (My Mother's wanted this a lot)
Wii Fit Plus (Other sister is a Wii Fit maniac)
All-in-all, I saved about $100 off the retail prices of these games, so I'm happy.
Additionally, the Toys "R" Us guy said something interesting about the return policy: 45 days, but you have to exchange all three games. Essentially, you can get three "$XX," and if something comes out in the next 45 days, you should be able to take those games back and get the new ones. Don't take my word on it, I'm just restating what he said. So while you can't do pre-order games, you should be able to get those games coming out later.
My roommate and I are thinking about going in for NSMBWii, buying two $50 games, getting the third free, and whomever gets the free third game just pays half price to the other one. We're gonna call and get clarification on that return, though.