A lot of Wii U games on sale at Amazon, including ones I can definitely vouch for as worth it:
 
⇒Call of Duty: Black Ops II ($19.99)
⇒ZombiU ($23.99)
⇒Need for Speed: Most Wanted ($18.40...great deal)
⇒Mass Effect 3 ($17.62 and says 9 left)
⇒Assassin's Creed III ($19.57)
⇒Tekken Tag Tournament 2 ($19.99)
⇒Just Dance 4 ($19.99)
⇒Nintendo Land ($17.99, with a third party at $10.95+$3.99 shipping)
⇒FIFA 13 ($16.99)
⇒Madden 13 ($17.25)
⇒Sonic & Sega All-Stars Racing Transformed ($25.99)
⇒Scribblenauts Unlimited ($29.99)
⇒Funky Barn ($29.9—just kidding...no one wants Funky Barn)
⇒Batman Arkham City: Armored Edition ($25.90)

http://www.amazon.com/s/ref=sr_nr_p_36_5?tag=cheapassgam08-20&bbn=4924901011&sort=price&qid=1374880028&rh=n%3A468642%2Cn%3A%2111846801%2Cn%3A3075112011%2Cn%3A4924901011&rnid=386453011&low-price=10&high-price=35&x=10&y=11

just bought batman arkham city WiiU a week ago from amazon! :D i havent played any of the new batman games but wow ive been missing out, its really great. also amazon is amazing it got to my house days earlier than excepted. I would buy more games but im saving for the 3DS xD

Hmm...AC3 and Need for Speed are tempting. If only they reached these prices sooner...we're SO close to Pikmin 3 and all the first-party games starting to come out that I'm not sure I'd actually play these older ports at this point. :S

Don't mean to bump the thread but I just found out (from this blog: http://mysteryblock.com/deal-alert-amazon-video-game-sale/ among others) that Amazon is still holding a summer sale for video games. I've seen some PS3's, PC downloads, and boxed video games actually go on sale for over 50%.

If I remember correctly, I bought Bioshock Infinite for somewhere around $19, which is a great deal for me especially because I haven't played the game yet.