- Welcome! I don't have one yet, but I have been approved for one to be provided by Medicare. So, I'm on a waiting list for over 4 months now. Frustrating! My friend Gordon bought one, an Inogen G5, and it was expensive. Close to $3k with extra HD batteries. But he loves it. His payments are about $60 a month. He goes all over with it. I am not on that top shelf, so I have to wait. Delays are apparently due to Covid. Keep us posted on what you wind up doing.