Would Like to replace windows the cheapest way possible. I want to make a proper measurement and by the new windows at somewhere like Menards.
Don't be afraid to go window shopping. When I ordered the windows for my addition, the difference in the total price for four windows was about $300. Most expensive supplier was the home improvement center, least expensive was a lumber yard.
Also consider, for efficiency, double glazed or triple glazed. Low E glass (a coating on the glass to reduce heat transfer)? Argon filled (argon is a better insulator between the glass than oxygen)? Window features, what grid patter (if any) between the glass. Double hung (both sashes operable) or single hung (bottom sash operable)? Half screen or full screen. If you are looking for a window for a bathroom you could order the window with frosted glass.