Meh, simple. Bought 3 TBC keys, used 2 on my accounts and have a spare one, pm me for price offering, or just post in this thread. Bid starts at 5 USD.
*Buyout 22 USD
*Edit
Am now officially trading the US TBC key for an EU TBC key, or just trading the actual US key for a molten-wow/beez thunderstorm acc.