One visit, one written number, and that number is what you pay. Here is exactly what happens between your call and the finished job.

The number is the number.
Upload one or two photos of the roof, chimney, wall or yard. Within one business day you get a 3D model like the ones on this site with the work marked on it, and a price range. If you like it, we come out, measure, and turn the range into one signed number.
Send the address, a few photos and what you are trying to do. You get a walkthrough, then one signed estimate.