Does this work if you have accounts at all the exchanges? I know certain countries price of btc is very high there. So if you know someone in that country, wouldn't that work or not?
it could work if you have the balance money and bitcoin on every exchange and you can buy and sell at the right time. but you need to know that the time of confirming transaction cannot predictable and sometimes we are missed this and makes our coins cannot deliver on time. the problem for arbitrage trading is we need to know how long the time of the transaction and I have a bad experience with this and makes me stop arbitrage trading.