Where is the cheapest most reliable place to buy a BF3 Premium Key?

[meowmix44]

I need to buy a CD key but not for $50. I already have Battlefield 3 Limited Edition and I love playing the B2K maps. This has nothing to do with piracy so dont go all SOPA on me Can you assist me on buying a lower priced key?

 

[Alex The PC Gamer]

I need to buy a CD key but not for $50. I already have Battlefield 3 Limited Edition and I love playing the B2K maps. This has nothing to do with piracy so dont go all SOPA on me Can you assist me on buying a lower priced key?

Origin, check for deals.