Progressive recently paid for my reset with a windshield replacement though.  OP, I would try calling Duncan and ask them if they can recommend an installer in your area.  Call that shop then and get your estimate.  I found a local installer by using a nationwide RV glass company installer locator section of their website.  Dig around.  Call the 1800 and tell them you want to know who their installer is before going any further.  Mobile RV glass for example is not really mobile, they contract out.  My local RV glass shop says he has contracts with 2 or 3 different companies.