The Hash power for each coin is different. Check out here for Hashpower and pricing. https://www.genesis-mining.com/pricing#ether-notice
All three that you listed is out of stock but let's say Monero for example. If you get the dynamo plan of 1000G/H for $819, the mined Monero profit is around $68.53 per month right now. So in a year it comes out to $ 833.81 and since it's a two year contract, it would come out to around $1667.62 profit. Take out the initial investment and fees, it probably will come out to 90%-100% profit. Plus if you sign up with my code, you get 3% off so add 3% to the profit.