Most people mine ETH, though. So your options there are to either buy ETH on the market, or invest in a miner that will pay itself off in 3 months with ETH, th

Most people mine ETH, though. So your options there are to either buy ETH on the market, or invest in a miner that will pay itself off in 3 months with ETH, then just provide pure profit for as long as it's, well, profitable.