Guild Wars 2

One of two things happened: Either I misclicked, and accidentally bought the wrong pair of pants from a Karma Vendor… or I clicked the right pants, and it gave me the wrong pants. I’m more likely to bet on the first. Either way, I’m now stuck with a pair of pants that my necromancer can’t wear, and not enough Karma to buy the correct pants. Is there anything I’m missing to let the vendor buy back the pants I can’t use? Or if there isn’t, is there some way that this could perhaps become something on the long list of “things to be done in the future”?

I had the same issue with the human cultural tier 2 armor. I misclicked and bought the medium tier 2 headpiece, thus losing 1 gold piece, which is completely useless as it is a soulboubd item and i wear light(mesmer). Is there anything i can do or my gp is lost?