Disappearing High Street or simple retail evolution?

The charity shops don't usually get cheap rent but they do get reduced or even free rates, so it makes it easier for them to be on the high street. That and their shop workers are mostly volunteers with usually one shop manager actually employed. They can take hundreds a day in sales. Everything is donated and their van drivers and shop workers are all unpaid volunteers. They have one paid shop manager per shop and one deputy manager who covers sickness and holidays across the 5 shops. Little wonder that they make a great profit and they aren't even on the high street but they have prominent shops in popular outlying villages.