Do the items vanish along with the event? Is it perhaps more likely that there would be people who just decided to sell what they got after the event was over and who consider 15k gold to be more than plenty gold for that item, than it is that people are donating 50 Euros to sell this at a huge undercut? And even then, for the third time I think, if a handful of people are actually up to donating (so you can play for free) and getting this item to sell for gold, I'm fine with that. The item costs so much right now, for an item that can later be replaced by better ones, that if there are people willing to do that, my response is "thank you for your donation," not "we will look into a way to cut down even more on the few donations we're getting while thousands play for free."