To their credit, I believe they hav released the FIRST EVER decentralized P2P marketplace app (other than Taaki's proof of concept). I agree that it's sloppy, and I hate the choice of python/nodeJS etc for this type of app.
Nonetheless, it mostly works, and it's a huge step forward in software concept and design.
I agree that to their credit they are the first to release something like this and naturally it will not be perfect. The stores will fill up and kinks will be worked out if there is a serious demand for this kind of service, which I think there is. I did my taxes and paid way too much to the Bay simply to sell. 10%, then paypal's fee, then cost of item, rediculous. I am rooting for this all the way!