You can't opt out of government-provided health insurance. It's not even really referred to as health insurance, it's really just referred to as health care.
I get my additional private health insurance paid for by my employer, so I never actually pay myself, but the same one seems to be going for about €110 a month.
I don't know that I would buy it if I had to pay myself, but I'm quite happy to get it for the small amount of additional taxes I have to pay on the benefit from the employer.
Bullshit.