With this morning's patch it appears that repair costs for items has been negatively affected by the change to item rarity. In short, repairing purple items can end up being prohibitively costly. Also, while new items have a item health of 100, items already in-game still have a lower health of 20, causing items to need to be repaired upon login.
We are diligently working to resolve these issues this morning and have a solution out as soon as possible.