I'm going to come across as a real baddie. I always charge as much as I possibly can and always double the price of any parts + VAT as a minimum. Does it affect how much work I get...... probably? But I do not do the job because I love it or for the good of my health. I work for myself to earn as much as I can so that I can have good lifestyle and put money aside for the future. I don't really want to be working unsociable hours and travelling god knows how many miles a day forever, hopefully my little Villa on the Med isn't that far away. I don't force anybody to use me and I advertise my prices so people know exactly what their getting. I don't think I rip people off; I would go so far as to say that some of my competitors do the trade a great deal more disservice than I do, by not charging realistic prices and doing it more as a sideline.