How Much Do Composite Doors Cost? – Endurance Doors No problem read on. Design your perfect composite door by using our innovative door designer. We always offer competitive composite doors prices, tailored to your needs. At MPN you will and can find your dream door, just make sure it is a Solid and Secure Endurance® Door! We do doors with sidelight, top light and side flag options to create the ideal door fit for your home.