Currently, Amazon is having a “Black Friday Sales Week” where a lot of stock is on special, including the games. For example, the Bioshock triple pack (Bioshock, Bioshock 2, and Bioshock Infinite) is reduced in price from $79.97 to $14.99, and the XCOM collection (including Enemy Unknown, but with no others from this year) is just $9.99, which may just be worth it for Enemy Unknown. The Dark Souls: Prepare to Die Edition (which has all the DLC) is $7.49 and Tomb Raider (a nominee for this year’s Game of the Year) is $19.99.
You’ll only be able to purchase it if you have an American shipping address (so if you made a new account with an American shipping address…) but it appears the actual codes are not locked by region.
Note: I’m not trying to give an advertisment for Amazon, but I just think this is a great opportunity to pick up some great games this year for a low price.