It does't appear that it would be worth anything more than $160, since that's the most it will generate before becoming unprofitable (at least in the US using the average cost for electricity).

http://btcinvest.net/en/bitcoin-mining-profit-calculator.php?diff=2621404453&dcosts=300&diff_mincrease=25&blpbtc=25&dhsmhs=30000&diff_mincreasedecrease=1&btcusd=700&dpowcon=150&btcusd_mincrease=1&pcost=0.121&calcweeks=45&dleadtime=0&action=calc