99 euro, dafuq? 1 btc is 90 euro on gox right now.
Yes, at the moment. We soon see $ 135 on Gox. Thats 101, but I always speculate very conservative, so I sell for 99.5.
That's not the right way to do arbitrage. You should sell immediately at the current gox price (perhaps even lower so you get immediate sales), withdraw the money, and re-fund bitstamp when withdrawal is done. Rinse and Repeat.