As a roofer, I've used several different 40' ladders over the years. They always require 2 people to set up and way A TON. We always dread having to go to a 3 or 4 story roof. But honestly, this ladder is worth every penny of $900. It is so light that I can set it up and take it down by myself. It only weighs as much as 1 bundle of roofing shingles.
Also, the double pulley system is genius! Why don't all ladders have this set up? You can raise and lower the ladder using the pull rope with only one hand. Other 40' ladders are hard to raise using 2 hands.
Overall, this ladder will save pulled muscles, injuries, and pain in the neck. Super happy with the purchase.