About fifty to one hundred dollars. General hospitals do not provide oxygenation services. You'd better buy a small oxygen bottle. The capacity of the oxygen bag is too small, and the oxygen bag is easy to leak, so it is relatively difficult to store.
Oxygen bag is a bag containing oxygen, which is mainly made of non-toxic and harmless chemical materials. The oxygen bag is convenient to carry and simple to operate, and can be used for emergency transportation in family health care and medical units. It's usually blue.