Generally cheaper to buy from Asia/Japan than SE's store, but there isn't that much in it.
More recently I've gotten my SE soundtracks(Lightning Returns and X Remaster) from YesAsia as their free shipping and lack of import tax made it cheaper than other places.
It depends on where you are from. I ordered the Okami soundtrack. I have to pay shipping and import duty at the door.
How is the X Remaster. I plan on getting it after I play the game.