Does “that sort of thing” happen with reagents and/or any other thing that people regularly have to buy from vendors?
I don’t see any upside to having tokens be a commodity that can be purchased for a set amount of gold (a gold sink, potentially), and then traded among players.
I certainly don’t see any incentive for Blizzard to make that a reality. Whereas if they are purchasable for fiat, then that may increase their revenue.