CoinMine has raised $2.5 million in a seed round led by M13 ventures. Other investors in the seed round include Republic Labs, Gumi Crypto, and Shervin Pishevar. 50% growth per month has been reported by the company with 10% of customers becoming repeat customers and less than 4% of customers returning devices. A previous analysis of payback periods of CoinMine machines has shown that the hardware has long payback periods of over five years.
Source: CoinDesk
