Ok, Battlefield 3 for US got Region protection so you have to watch out it's NTSC-J or NTSC-U/C. Our home market console can only play NTSC-J & No region protection game.

Play-Asia offering on NTSC-J

Click here to see the compatibility list of BF3 U/C

The Impulse Megastore in your posted URL is LYN reputable seller.

What is your goal from these sites? DLC? Price? fast? If the code is stated in packaging means it will sure be delivered to you~~~