My high end home GPU averages 25MH/s and nets me $30 per month. At $0.2/h/gpu it would cost you $144 per month. Assuming the GPUs have the same efficiency, you

My high end home GPU averages 25MH/s and nets me $30 per month. At $0.2/h/gpu it would cost you $144 per month. Assuming the GPUs have the same efficiency, you're making 20% of the cost back. My brief testing (30 mins run) makes it even worse, a 8 GPU instance ($1.6/hour) was going at about 90-100MH/s, which means they're even less efficient than my home gpu. 100MH/s is around $130 a month, for the cost of $1150/month or 11% returns. The price of eth will go up, but if you don't have a GPU already, it's more profitable to buy it directly. If you're investing in mining and expecting the price of eth to go up to recoup costs, you would be making much more money just by buying eth directly.