I have six trees that need removing and it's going to cost me $1,200.00. This is said to include removal of trunks, leaving the stumps cut off at about ground level. All debris removed and a small birch tree removal included for free. I got three estimates. Two where scribbled on the back of a business card and this one was actually written on note paper. I have never had a job this big done for trees and am wondering if I should get it all in writing or is the note paper enough? It's not signed or anything. He advertises being fully insured and I would plan on at least seeing proof of that or should I maybe get a copy of it to boot?