I'd say so! $30 is cheap by today's standards.
Too bad there aren't more like your retired doc.
I know a great doc who didn't take insurance. I may have to see if he's still not taking insurance and see what his rates are. If they're reasonable, I could always go out of network and send in the claim myself and still get reimbursed for 80% of it. Except we may be changing insurance companies. Sigh.