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TSW fanboy but I've pre-purchased GW2 and will be playing both games. TSW's cash shop (which I find mildly offensive since I'm also paying a sub) sells cosmetic items only.
I understand that GW2's cash shop sells gems, which are useful for something, I assume. I also understand that the gems can be sold for gold, which sets off a red flag for me, but I'm open minded.
What else is sold in the cash shop for GW2?