When you say per window what do you mean? I count two panes as a window, most windows are made up of two panes, one opener and the one next to it. If you are talking modern house bays, these are usually made up of five or six panes. = two and a half or three widows. door and small window next to it = one window. Do you charge more if the windows have transoms with small openers? Do you count small toilet windows as one window if you have to climb? Pricing is an art that comes with experience but I still get it wrong sometimes. There is one thing I do know, It's corners that slow you down. I think we should price not on panes, not windows. How much do you think we should charge per pane?
DAI