Unhappy with deal. Want to cancel Purchase Agreement.

Asking this, becuase I do not know. But in the OP's post. He said the dealer wanted the money down, before they would look at his offer. And deceide if they would take the offer?

I understand that with buying a house (earnst money). But with a used MH ?

Is that common practice? Again I do not know, but sounds a little shady to me