Ok i know im not a shop owner but i had a idea;
So im proposing a owner operated user interface terminal.
This way if you cant find it in a shop or auction you can go to one setup the item you want order and prepay.
Then when the owner logs in they get a message about the order, if they can fill it then they would make item and put in term just the way it was ordered, then they are paid.And the custermer logs in and gets message order is ready go pickup at term xxx.But if they cant fill order they click deny and person who made the order is refunded their money.
I think it would be a plus to any shop owner.
Plus it would alow people to interface with each other form all time zones.
Also terminals are setup with prices and items availible by owner.
just a thot i allready ask ma about it and it appears they like idea not sure tho, they just answered it fast.