At first i have a real doubt in many mining site. So i tried investing small amount like, around $30 then after that it became around $200 after 3rd round ends, i can't believe it i just make some reinvest then withdraw then timing of the allocation and promo's then this is the result's, i got my ROI and have additional bitcoin inside the gominer to mine and earn more! Try this I'm sure you will love it!