kristofer - Replacing windows is a significant investment that can enhance your home's energy efficiency and curb appeal. The cost can vary widely depending on factors like the window type, material, and installation complexities. I found an excellent resource at https://fittra.co.uk/costs/window-replacement-cost/ that provides a detailed cost breakdown for window replacement. It's quite informative and can help you estimate the expenses involved in your project. Definitely worth a look to get a better idea of your potential investment.