Are healthcare and health insurance expensive in Sweden?

"Healthcare in Sweden is generally considered to be of high quality and is provided free of charge to all citizens and permanent residents. Health insurance is not required in Sweden, as the government provides a basic level of coverage for all citizens. However, some people may choose to purchase additional health insurance to cover additional services or to reduce their out-of-pocket costs. In general, health insurance in Sweden is not considered to be expensive, as the government subsidizes a large portion of the cost," mentioned another expat when asked about moving to Sweden.