CoD World at War for 360....

Basically I am pretty pissd. I went to get it at gamestop because I was in the mall previously in the week and told me it was 35 dollars new and 32 used. I thought great! Let me get my pay check friday and come back. I get paid and get back on sunday. I go to get it and they tell me its 60 dollars and that was just a sale. I ended up not getting for that price.

Does anyone know when it will be back on sale or any websites to get it cheaply from? I wish I just picked up this game the day it was on sale if they mentioned it was a sale price. Oy...