They just added new items. It seems like some clothing items depreciated in value. There's still one monocle for 12,ooo Aurum, but it is now gold. Goggles for 1,500 Aurum. That sweet 'Field Marshall Coat' is 9,000 Aurum.
It makes more sense now, but they really need to label items as "new" if that's the reason for the price or "limited edition" if they plan on rotating it out of the store.