Like so many things, the answer is it depends on the material selected and the difficulty of the installation. Standard double hung vinyl windows, which are the typical rectangle over rectangle design on most houses, that we can walk right up to are about $100. A storm door is about $125. Here are some typical homes with estimated pricing for the entire front of the homes. Keep in mind as windows get very big, very small, very high, or have curves or angles the price increases.