The problem here is, is that final fantasy isn't really that big as you'd think in the west. It's definitely one of the more anticipated and known jrpg's over here, but the playerbase isn't as high as it is in the east. Real marketing for FF stopped after FF7 where every bus stop had a cloud imagine embedded on it. The gamecards also doesn't earn the store any money at all. There is a 0% margins on gamecards. It's something extra a store could use to attract customers, so you'll sooner see something of the popular games like WoW and LoL.