In NL, you pay ~€110/month annually, with a max out-of-pocket cost of €385 per year. So, maximum €1600 cost annually.
People with a low income, students, etc, get approximately the same amount of money as a cash benefit to cover these costs.
I'm not saying this is good, it isn't, healthcare costs should be covered by general taxation like in the UK. But it's not very expensive.
(It also seems pretty stupid in the Netherlands, because you have to pay an insurer for your health insurance, but they all charge pretty much the same, since it's highly regulated, and then out of pocket costs are capped. Seems much simpler to eliminate the insurance companies and let the state administer costs and pocket the profit that the insurance companies are extracting)