In countries with a public healthcare system, such as Canada or the United Kingdom, emergency room treatment is typically covered by the government, and patients don't have to pay out of pocket. In countries with a predominantly private healthcare system, like the United States, the cost can be more substantial, and it may vary depending on the hospital, the type of treatment provided, and whether the patient has insurance or not.
If you want to know the cost for a specific hospital or healthcare facility, it's best to contact them directly or check their website for information on pricing and insurance coverage. Additionally, if you have health insurance, the amount you pay out of pocket will depend on your specific insurance plan and its coverage for emergency room visits.