How to work the deposit?

[Kameron Fontenot]

Hello, When trying to buy a house for a wholesale price everyone keeps telling me $3,000 non refundable deposit. I was told the $10 and $10 works for wholesale but I'm not finding that accurate. Also if a deposit is required is there a way to ask the buyer for the deposit before I get it under contract? Have this issue please help (No I don't have the money for a deposit) Thank you all, Kameron