I think $70/hr is a little high for Cincinnati, but close to normal.
The thing that got me was the $48 trip charge that he marked down even when
he was only there a few hours. I'm pretty sure that anywhere, simply
roughing in a full bath and kitchen sink with minimal trouble, and he didn't
put in the shower stall or shower valve (the lines were not far away, and it
was all open, etc.) that $5400 was way out of line. He wanted an additional
$1100 to set the fiberglas stall, put in the shower valve, and set the
toilet, lav, and sink. The fixtures were coming from elsewhere, he was just
going to supply the shutoffs, traps, and supplies.
I was a plumber for many years in Chicago, but do some side work now just
to grease things along. I can do a lot out of my car, and there's a lot of
work out there to do.
This small church should have asked for a bid or at least an estimate.
They're just sick over this, but they paid him off.