I am sure you would do a great job and in general it would be a great place to buy/sell within a community of trusted people. I have learned that focus is important in life, and this might defocus what we are trying to accomplish. More importantly, however, is we might attract a certain crowd that would try to sell us, “bargain land in Japan.”
I was not thinking of a competitive thing to ebay. Just an area for like minded people to buy - sell - trade. I would not mind making a donation to FR to post something.