My average price for replacing your old windows with new double pane, vinyl, efficient windows is an average price of $300 per window. That price includes removal of old window and frame, installing new window, and making it look finished inside and out. It includes labor and taxes. It is an Amsco window which is made locally out of Salt Lake City. I do the work all by myself so I don't have to raise the cost to pay for any middle people. I can install 2 weeks after first measurement and can usually do all windows in a day. I'm licensed and insured and Im available anytime for free estimate. Thank You.