1. the....I cant believe you paid 220 dollar camp and the
2. its your fault for being careless
As for #1, people do realize Blizzard has created a market/alternate currency system right? Since gold is directly fungible to dollars, just treat it like i spent 125mil gold on the item (about right at current exchange rate). Which i more or less did since aside from the 60bucks to buy the game I havent input any cash into the system, just sold stuff bought with gold on rmah to then use the cash to buy other stuff. Ultimately has no bearing on the underlying issue that the UI makes it way way to easy to sell equipped items you have no intention of selling.
As for #2, yup, i was careless, and per Blizzards policy on sold items (which I don't find unreasonable) I am out of luck. The UI can and should be improved so others dont make the same mistake.