I think he wanted to arbitrage the price difference between Bitstamp and Bitfinex a few days ago. They were off by like $4-5 or so.
Even at this difference he can not make any profit due to charges on fiats (USD, EUR etc) may be he could make it an investment ebook and give it to a highly trusted member to vouch it then we can buy it if we finds it interesting.
Charges are flat rate. $50 on $50 is 100%. $50 on $5000 is 1%. $50 on $500k is 0.01%. I could go on but I'm guessing you get the point.
I actually did not get any point here because if the i should buy at the rate of $365 and sell for $370 (for example) i will be left with $5, if i now purchase 10 btc, my profit will be 10x5= $50, this profit can easily be eating up by wire transfer, visa card charges or perfect money commission.
Right. So now you bought 100 instead. That's a profit of 500-50=450. I'm not seeing the issue? The more investors had put in, the higher the profit would have been. Just like any other trading system in the world. It's nothing new/complicated. But that also doesn't mean it isn't risky.
Except for the slippage. You can't scale arbitrage all the way up. Because buying on Site A will make the price go up there, and Selling on site B will make the price go down there, meaning you will make less and less profit every time you make the trade, which is why we gave you the correct answer that should be given to everyone claiming to have an arbitrage opportunity, "why aren't you doing it before it goes away?"