I live in the Netherlands. If I visit the hospital I have to pay my yearly deductible of €350 first. This person paid zero dollars because her travel insurance paid for it.
The Netherlands has the same system as Obamacare. Privatized insurance with government subsidies for low income. Only difference is that the government sorta acts like a single payer, they negotiate with big pharma over medicine prices and the government with the insurers make a price list for healthcare providers on what they can charge.
Of course a healthcare provider can decide to charge whatever they want but then insurance won’t cover that business.