This looks awesome ...... Your post is the first I read of this and I can't wait to see the finished product. I am not sure if I have any questions. Any question I can think of is answered in your opening post.

I suppose I would like to know if their will be a rating system that allows users to upvote / downvote the rep of those we are buying from ? To further expand on that question will certain sellers be able to earn a " trusted Seller " badge or icon to further help buyers with our decisions on who we will purchase from ?