https://www.homewyse.com/services/cost_to_install_window.html
The basic cost to Install a Window is $624 - $954 per window in January 2025, but can vary significantly with site conditions and options.

https://www.reddit.com/r/askportland/comments/stcgii/how_much_are_you_all_paying_for_new_windows/
I've started getting quotes for window replacement on my home and our first estimator told me that industry-standard is about $1500-$3000 per opening.

https://www.homedepot.com/services/c/cost-install-replacement-windows/e57e696e1
Window installation costs and window replacement costs vary according to the type of windows you select. On average, window installation costs range from ...