P.S. Buying and holding previous contract would cost 0.003+0.003 BTC = 0.006 BTC. Buying and holding BUK3 for 30 days will be 0.0001*62 = 0.0062 BTC, so it's nearly the same for b&h strategy.
0.0062 BTC at the current price of 140USD is 8,68% fee.1:2.5 leverage is not worth paying nearly 9% fee. It's increasingly more attractive to trade on Mt.Gox without leverage and with 1.2% fee or on other exchanges with even lower fees.
8.68% sounds scary, but you should also note that you are comparing 2 trades at Mt.Gox with 62 trades+clearings at ICBIT
Also there is a BUU3 contract that has 0.001 BTC fees (down to 0.0005 BTC if you have volume discount).