So much insight as well as a tangible question in one comment. You have touched on salient points and questions like this i am sure will help steem shop evolve into a viable replacement for third party merchants that we have come to be familiar with. Let's see what the road map holds!
Thanks both for your useful comments. I hope the lastest more detailed post better explains the system. No doubt it will evolve in time but here it begins :)
https://steemit.com/news/@samstonehill/steemshop-launches-to-life-with-an-upgraded-system
Thank you @unmean-stweets ! I appreciate your response to my comment.