Just 2 days after the initial approach
So ....
I've setup a development store and looked very very briefly at the marketplace applications that would enable a Localburgh style site.
They all have a monthly fee which goes from a tenner (3 vendors) to hundreds of $$. They have trials running from 2 weeks to 30 days, which indicates that some time is required to assure yourself that it is the right product for you.
https://dunbarlocal.projectspoint.co.uk/
is a development holding page and requires a password, which at this stage please do not share.
I've just used some the "totally locally" design assets, which I "localised" a while back - these should not be used, without renewing permissions.
There's not really much there to see but I thought it might help maintain momentum.