Same reason as BGJ...If I pay 20% I know I'll change my mind or find a better deal. At least if I pay upfront, I may find a better deal but I'll I do is kick myself.
What is your policy for 20% if they change thier mind? Will you return it?
I saw on your web site that you offer a year warranty. What are you CRAZY!! How's that working for you with these china motors?