I find I am pretty much in line with the window cleaners in my area, got a customer one dropped, and was cheaper than him, went to another street to give another qoute, customer fell out with the last cleaner, same one as my last qoute and I was about £3 dearer than him. Go figure.
I have various jobs of various prices, I have about 50 odd under £6, granted small flats but still, if you get by and you are happy with what you have earned at the end of the month then no one can say thats silly. Even if you only do £70 a day six days a week for on a four weekly rota, thats nearly 22k a year if you dont take any holidays or sicks days.
We all know we can have a spell where we earn £30/£40 in the on hour but its not maintainable and if you earn £15 an hour and spend half that on expenses which wont happen, your still making a good bit more than someone employeed at minimum wage.
Ok, so heres the thing. We are all moaning because all these £5 window cleaners are taking up the business, and everyone wants that price regardless of the size of there home, and yes it does have a negitive effect on the growth of the industry but still, you can make money of this craze. If as many of them quit as you think, then buy them out and grow not moan.