In my almost child like lux excited, game is finally here sugar high, I clicked and bought the wrong ring then proceeded to send in a support ticket after I re-purchased the correct one, so I guess if they don't refund it, I either take a loss or try and resell new lux at a discount. Either way, it is 100% my fault for not fully reading what I was clicking on.
Best way for OTM to cut down on the number of refund requests is to have a "rent" feature on each item, where for a certain amount of gold you can try a temporary item (maybe just like the faerieland quest items from OW with a preset # of uses or time) for a little while. I know people will argue doing something like that then becomes a scammer issue with bait and switch or selling a look alike item, but that is why you name the item Demo, etc so people can distinguish it from the real deal.