That's very true of course, but you'll probably find that you pick up speed quite quickly anyway, I think starting up, pricing per window is the way to go. Small windows £1, Medium £1,50, and large £2, French doors £2. For Georgian panes add 70% more or so, leaded lights twice the price, and stick on lead about the same as normal windows.
What techniques are you learning right now? Do you use a straight pull down method, or are you already practising fanning?
