The advert below on eBay.
Claims to have a 2 weekly round bringing in about £900 a month from 100 houses.
That would suggest an average in the region of £4.50 per house. Yet claims prices are between £5 and £12.50.
If your going to sell at least get the maths right first.
Hi there. This is for the sale of my window cleaning round you are buying just over 100 houses on the round in 3 different estates in Wakefield. Charges per house is between £5 - £12.50 and most of these are fortnightly bringing in £900 a month on average.