They're not actually arbitrage opportunities because there's no liquidity. All these exchange hang-ups are why the spreads look so unbalanced, and it's not like traders aren't racing incessantly to correct it.<p>Unless you have fiat in all the exchanges, bank accounts in multiple countries, and large amounts of cash on hand, you don't really have a chance here. Like most amateur arbitrageurs, you'll just going to end up in the red after all the delays and fees.