The one time I was on COBRA, under 3 years ago, I paid close to $700/month, and I was the only person included in my coverage. Health insurance premiums have very likely gone up since then, and family sizes above 1 (such as even I have now) would cost meaningfully more than that. Smaller companies than that employer might also have higher total premium cost per employee, if they aim for good coverage.
This was NYC and was high quality and inclusive coverage.
Kaiser Permanente is from what I've heard an unusually good deal without anything comparable in NYC or most of the rest of the US, though not without their own weaknesses in areas like mental health coverage and dispute resolution.
