If the bloke is used to earning minimum wage and he can get up some speed he probably reckons he would rather do that.
Outlay: couple of scrims, bucket and ladder.
Not everyone is trying to make a fortune from window cleaning.
My mother in law gets her fronts done for £3.
On one of the roads I do where I charge £18 for semi's there are a couple of blokes who charge £9 for the same style house.