Is it profitable to invest in this?
Let's say I invest 1 btc. How much would I get back per month approx?
My advice ? Buy one BTC and keep it in your wallet but don't invest here. GM takes too much fee to be profitable.
How do I figure out the maint cost on my purchases. Yes if GM can do it cheaper then great
You contract is forever UNLESS your payout doesn't cover the fees anymore. Then GM will cancel your contract.
Feel free to believe me or not but I think it will happen before you ROI.
The fees (the maintenance cost) are written in your contract. You can check it directly in your account on GM website.