Circa 2011, in a low population area, I had to call 4 or 5 plumbers to find one that thought dealing with a clogged toilet was worthwhile. One was busy, another thought it was too far a drive (~30 miles!), another said it didn't sound like a job he wanted and the fourth didn't get back to me before I had found someone else. Who knows if I got burned, but it was $350 when I did get it done, so maybe worth that extra 5 miles of driving.

(roots had (probably) grown into the line to the septic tank)