Magi Monday? Camel Tuesday? No ... Wise Wednesday. A day when you buy gifts in person ... to be delivered in person. Price does matter, but not as much as the act of giving. So Merry Christmas ... and I hope it's a white one.
How can a town grow its own high street, with little or no help from outside? A century ago that would have been a strange question: every town's high street had grown more or less organically and was an expression of the industry and resources of the locality.