The price on btc-e doesn't matter when you deposit btc but have to buy it back later. The only way you could make profit in this case is when the price goes down (on btc-e) after you sold, so you can buy back more btc. But this has nothing to do with arbitrage.
Btce is at 1000 and Bitstamp at 1050
You send 1BTC so Bitstamp so you get 1050 then you buy 1BTC at btce.
You won 50$. Easy life.
You can do it the other way around. You send 1000$ to btce. You buy 1BTC. You send it to bitstamp. You sell it and get 1050. You won 50$
All I'm saying is that it's complicated to actually profit from that because you need large funds available and also to have a price gap high enough to cover fees. That's where the difficulty is.
Thanks for explaining how arbitrage works but we all know that. You failed to notice (or just didn't bother to read) that my and BitHodler's posts relate not to arbitrage in general, but to use of bitcoins as an alternative to fiat btc-e deposits, which won't work for arbitrage (and BitHodler has already clarified on that).
aaaaaaaaaaaaaaaaaaaaaaaaah!
Ok ok, my apologies! I absolutely didn't understand the first post in fact! For me BitHodler's post was meant to explain a use of arbitrage while getting fiat out of there!
Well that makes much more sense now. I have to admit I didn't understand why you were asking me to "do the maths" as it was pretty obvious to see the point of arbitrage (which is basically to get some profit from price differences).
Well I still maintain that arbitrage is freaking difficult!
For the rest it seems that I wasn't discussing on the right subject so obviously I was a bit out of track.