Here is one answer for all these how much questions.. Get three estimates !!!! simple your question is to broad.. Do you want a steel door, a vinyl door, an aluminum door, a wood door, is it insulated, is it hollow, is it going to have glass, designs, panels , and colors effect price. Oh wait lets not forget regional pricing due to labor costs, and insurance and taxes, some areas are much cheaper to opperate a bussiness then others, .. You have to change tracks rollers, hardware and springs do not short change your self get information get price quotes , make comparisons, then you tell us " how much"