I didn't bother to triple-check some other place that might have been significantly cheaper than Richair. I received what I paid for. Even the installation crew was excellent - they showed up exactly at 9:00 for a 9:00-6:00pm window and were friendly and efficient, even patiently helping move my furniture away from work area. I wouldn't take care of this without help.
I don't expect to need a new water heater for years, but Richair Comfort Solutions will be my first (and probably last) stop when/if I do.