PN and NPN

[LIA SPRIGGS]

Hello network,

I just starting to  work with people that sell notes: REOs, NPNs, Commercial etc.

Their minimum purchase in REOs is 10 Million and the NPN minimum is 20 Million.

 What is the best way for me to make sure I will get paid?

Is it there a contract, and if yes which one  that I can have them sign?

Should I be paid by the seller or the buyer?
Thank you for the feed backs.

Lia