Hi miners.. I am fairly new to Bitcoin and mining process so basically I am a big newb with some money to invest. I am thinking of buying 2 x 50 GH/s Bitcoin Miner from BFL since they say that they have them in stock to ship right away (I hope so). That would be a $5000 investment + 30% in importing fees for me so I was wondering what do you guys think? is it worth it? When could I expect ROI? By some predictions (which I'm very skeptical about) it should be in 3 to 4 months.