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Can you tell me your experience. What ROI you got in how much time.

Everyone's ROI will depend on the amount of money you invest in the contract. You can upgrade over time once you have a contract to upgrade. This: https://www.cryptocompare.com/mining/genesis-mining/dash-starter-gemini-2-year-small/ << Appears to be the smallest one you can start with;

HOWEVER, if you plug in how much you plan to purchase here:

https://www.cryptocompare.com/mining/calculator/dash?HashingPower=0&HashingUnit=MH%2Fs&PowerConsumption=140&CostPerkWh=0.12

<< You can see what is estimated for your returns on any amount of MH/s you are considering.

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