Good luck to everyone arbitraging BTC --> MtGox JPY --> JPY --> USD --> Bitstamp USD --> BTC
You will pay a few percent at each step.
Correct ,with like 10k BTC sums.
Anybody looking for move a few hundred BTC around to make a 20% profit won't have any issue, so long as they can withdraw to domestic japanese bank.
at large sums that is negotiable....