I don't think it was too expensive, under $200 each time, but we had several plumbers come out. The first guy didn't have a long enough snake to reach the roots, neither did the second guy, but he went out and rented the equipment, but he still didn't get them all, so that's why we went with Roto Rooter. Also, any good plumber will guarantee their work, and will come back out if they didn't get it all the first time...we didn't know that, so we kept calling different plumbers, and paid a lot more than we had to. Judging by their name, I'm sure Dayton Sewer and Drain has experience with getting tree roots out, so you should be fine.