I already have genesis mining contracts, so I speak from experience. The price movements greatly outweight the payouts in the contracts I have. I would have made way more profit if I just bought and hold BTC, ETH, XMR, instead of buying the mining contracts. It was a great learning experience but their mining contracts are extremely overvalued. Look into gigawatt if you're interested in non cloud mining services. You can buy actual miners from them that they will host for you for very minimal costs.