Window cleaning last week on an estate where I normally charge £12 per regular visit.
Lady next door comes out and asks ''How much do you charge for a one off clean?''
Windows were very dirty.
I said £35. Three times normal. Approx.
Too much, didn't get job.
If she had said yes I wouldn't have done them there and then anyway, as I would want my water for my normal round so would have come back separately at end of week.