You don't have to go to EB Store to shop for this buy 1 get 1 free. I think this will valid online as well with the coupon code listed there.
It says you can shop by phone, so it is basically the same as shop online.
This offer valid 3/2/2004 - 3/30/2004, so I have no way to test it yet, but I am sure it will apply online as well.