I understand BitInstant is the cheapest way to transfer funds from Mt. Gox to BTCE (1.5%), but orders are suspended at the moment. I was thinking about doing arbitrage trading as the difference in price between these two sites has been $14 recently. If I withdrew funds to my bank and then redeposited them, would it be worth it after all charges? The only thing which is hard to factor in is that a rubbish exchange rate is like a hidden fee.