It seems that, mainly as a result of this forum, as I have raised my minimum price the number of people who ssem happy to pay it remains about the same. The vast majority still accept it without hesitation.
I am coming to the view that confidence, and being comfortable with what you do and charge is conveyed to the customer. If you are hesitant and a bit unsure they get that too.
Minimum prices, Front Only £8, Bungalow £10, 3 bed semi £14, Council house on the local estate £12.