It is good it is working out for you and I hope you get all your funds back too. The problem I have is with the 120 lock-in coupled with balances being maintained in US dollars. (Correct me if I'm wrong.) Say you put in 2 BTC, at $450 and it is converted to dollars and locked in. What if bitcoin has a major run during that 4 months and goes to $1800. You get back .5 BTC instead of the 2 BTC you put in. Just how good do the returns look then? My example is extreme, but if they are doing arbitrage why do they have to convert you bitcoin balance to fiat anyway. It just doesn't make sense to me.
I put my BTC in when it was over $600. Worked out pretty well for me eh? Funny how you use an example on the opposite end of the spectrum isn't it?
I find the conversion to fiat dollars a huge plus as I have other investments that gamble on the BTC exchange rate and this isn't one of them.
Bitcoin Trader is for "passive monthly income" just as they claim.