There’s plenty of shiners up here still charging 1980’s prices. I live in a 1960’s semi in a nice part of town, local window cleaner cleans 2 weekly and charges £3.50 for I’d be charging £12. I can’t he’s earning £21k per year but that’s his choice for not valuing his service.
There’s also plenty that do value there own service and turn over £40k/£50k+ easily enough.
Don’t always believe the people that say it’s impossible to make a good living up north, sometimes it’s just a matter of choice.