I don't think many techies will be shocked to pay ~$500/month. I wonder how much salary you pay to your people.
$450 * 12 * 50 = $270,000
No wonder pharma companies in the US make a killing.
Even if you consider a very low salary of $100,000 and consider that health insurance is completely pretax (federal, social security, and medicare), that's only $308 a month out of your check if you had to pay it all yourself.
Also, $462 a month anywhere outside of California in the US is a decent amount of money. Hell, even in California that's a car payment for a luxury high end car.
I'm not a liberal or progressive - I'm a bleeding heart libertarian. For instance I don't believe in the minimum wage (libertarian) but I think the Earned Income Tax Credit should make up the difference and it should be a monthly credit so people can have a livable wage if they work (bleeding heart) and don't have a problem paying taxes if it helps people to help themselves.
Most people who work at tech companies in the bay area don't pay for their insurance, or pay very little. It's just considered part of benefits.
I think they'd be shocked if they had to pay full retail price for it. Also, the government subsidies only apply if your making less than 50k a year, so most likely everybody would be paying full retail price if not for their employer.