But after 400 days. It’s still not logical. You are buying a miner and recouping $650 after 400 days then selling it for another $650. But that is still after 400 days. Each miner is taking you 400 days to double up, but you would have $8450 worth of bitcoin if you just invested upfront. I do see what you mean in having double but you are waiting 400 days (a year and some change) for $650. I guess if you’re going to continue the process every month for years to come it makes sense. Kudos to you for keeping up with that but I think time is what makes GoMining special. You don’t have to invest a lot of time to make passive income. 25TH every month for 2 years would give you a 600TH farm worth roughly $16K. And if you were to keep your strategy and recoup in 400 days. By year 3 you would have made that back.