Lion King was $8 from GoHastings and Clerks II was $5 at a local pawn shop. The rest were $5 from Best Buy's Upgrade & Save.
Batman and Shutter Island were $5 from GoHastings. The games were all from Best Buy. Need for Speed was $5, Twisted Metal was $20, AC:R was $10 and Super Mario 3D Land was $18 after my GCU discount and a $5 RZ certificate. Hooray for my first 3DS game.
Another copy of NFS from Best Buy for $5. Price is Right was also $5 from BB. Syndicate and Neverdead were from Microsoft Store for $16 total.
Brotherhood CE was only $15. The box is very worn, but the inner contents are in great condition. I only wanted the jack in the box anyway, so I'll probably sell the game and make back most of what I spent. The headset was also $15. It had good reviews on BestBuy.com and my other one broke within a week.