I think that Squares is suggesting something entirely different from Ebay.
I imagine that Squares's idea is that we kinda help each other out a bit - some of us are trying to sell furniture/household items, and others are looking to buy the same items, so rather than sellers paying the Ebay type of fees, and the buyers having to incur the high delivery charges that most sellers whack onto items on Ebay, the "WikiMarket" would avoid that, and would be exclusive to Wikivorce and our members.
I turned into the ebay queen when furnishing my temporary flat. What would have been really useful would have been access to/information about cheap delivery mechanisms. I have no muscles and a tiny car and all the best stuff seemed to be at the other end of the country.