Home Oxygen Devices

Hi,
I took an inhouse sleep test which showed I might need oxygen at night., My doctor, who seemed great, said I'd be hearing from his office.
I started doing research on what I might use at night.
Today a company said my device would be on its way!
I thought this doctor was pretty classy and understood my wife and I are fussy patients.
Is this normally the way it's done?
I can pay if necessary for something better.
I am really disappointed because we liked this doctor, but just in case, I've started looking for a new one.
Any advice is appreciated.