MarketPress Tracking and posting

I have the MarketPress Plugin. I need to know are there any options that will allow the Main Site administrator to see all sells or products order from resellers. I may have 20 resellers however I need a way to manage to see each resellers orders.

Question 2: What is BuddyPress. Can I get this Plugin free to test it? Can you tell me if it will handle the following needs

I am creating a website where members can post there products to our main site. You can have a option that will allow users to give feedback (Rate) the products they buy. I will have access to see what and how many product Members that post t to the Main site. Members that buy products from the site can login there account and see all of the products they have order. Do you have a plugin to handle this