Even 50 is too much for an Um, so just take what you can get. The prices inflated because of all the idiots spamming General Chat for gold, therefore making gold's value diminish. I've bought Ums for 25 gold on here before, but I will never spend 50 for one, if that's what it's going to cost.
Also, this isn't aimed at any of you, just telling you how it is and what you might expect. Sorry for spam too, just needed to vent.