You could do it yourself for half of that
I did think about doing it all myself but quickly came back to reality. There is no way in hell I could take down the tree (too high), and I don't have the right equipment. I could rent an excavator and do the sewer line. The problem is, if I screw it up I would have to call someone to come and fix it and be out the money for the rental and the materials and pay to have it done right. I would much rather pay to have it done right the first time and not piss away money I don't have.