b) easy to understand, and
c) above industry standards.
Here is an example of a customer which had their windows tinted at Eclipse in 2006. 10 years later they experienced some fading to the window film. They kept their receipt and brought it in for service. The local owner of Eclipse Tinting, Chris immediately replaced all of the tint on the windows!
Just off of Woodruff Rd: 350-B Feaster Rd. Greenville SC 29615