If a window cleaner came round my way thinking that he can charge what he thinks he is worth, he would get no custom. I charge some £3 because that is what they are prepared to pay, im pretty sure that if they didnt get them done at all they wouldnt be bothered. So £3 it is and you have to be bloody quick to make it pay. No time for chasing people round the house. I timed myself today to clean a standard window with 2 long oblong(i ant said that for a while) panes. Climb up ladder, mop, blade, wipe sill, back down ladder in 30 seconds. Most of the £3 houses have 3 maybe 4 windows upstairs. So barring birdmuck, customer not ready with money or any other time delay me and the lad can easy rattle one of in under 4 mins.