Wow. I have been thinking about trading by multi-exchange. I know bitFlyer markets on their homepage to take advantage of the YEN/USD. I know India and few other countries were trading at 10% and 20% differences.
I just wondered how American and UK exchanges could be confidently traded given bitcoin fees. A Lightning Network or low cost BCH I thought might be profitable before unifying the exchange prices.
I digress. TY. Will be visiting. Maybe one day I'll have the financial and knowledge resources.