The price of public health insurance is based on your income. If you earn more money, you pay more for your health insurance.
The Höchstbeitrag is the maximum amount you can pay for health insurance. If you earn more than 59,850€ per year, you pay the Höchstbeitrag. It’s around 470€ per month.
There is a different Höchstbeitrag for self-employed people, the Selbstständige Höchstbeitrag. It’s around 925€ per month.1