I know it probably has been asked and answered before. But seeing there is such a large spread between mt gox and say campbx, how difficult or easy would it be to buy on one and sell on the other?
Because you can't truly sell on Gox for real $$$ unless you're some kind of whale/insider.
Or live in Japan. To arbitrage, you must be in Japan or have a business partner who has Japanese bank accounts. Even then, you lose around $4 converting Yen into USD from Gox. So if the spread is $12, the spread is actually $8. That's $8 minus trading fees on 2 exchanges and minus two wire fees.
So, with the exchange differences being only around 5% right now, the profits margins are not huge.