Window Estimate Dropdown App

I need a small program that lets me build clear, professional cost estimates for my window-replacement customers. The flow I have in mind is simple: I open the app, choose a window style from a dropdown that shows thumbnail images, enter the size and quantity etc... (Budget: $30 - $250 CAD, Jobs: App Development, Backend Development, Desktop Application, Frontend Development, JavaScript, Python, User Interface / IA, Web Application)