This is absolutely great stuff and I definitely need the RM for one of my projects!
The only additional feature I would need for my own project is regarding Payment and Comission-Percentage:
supplier uploads a "Paid Resource" (e.g. a .pdf-file)
customer is buying the "Resource" (e.g. a .pdf-file) directly at my XF-RM via PayPal
supplier receives the money and I get a Comission (a certain % of the Selling-Price) from each Sale.
Well done for now!
I'd like to +1 having this.