The most notable exceptions I find are Japan and Singapore, where it can be purchased without an Rx.
As for other developed countries, they typically have universal healthcare and the patient does not need to pay for CPAP devices. Regardless, insurance and prescriptions are orthogonal.
From the website you linked:
> All CPAP machines require a prescription for shipment. Details of submitting a prescription are provided below. If you have any questions or concerns, please call us toll-free at 1-855-542-2727.
Here is an example of what I found:
> Do I need a prescription to buy a CPAP mask?
> You do need to provide written confirmation of CPAP suitability when ordering a machine, but this is not required for a CPAP mask.
Also, the nasal pillow "masks" are vastly superior.
one big thing is that you really should only breathe through your nose if you're using nasal pillows.
My plan is to get a prescription I can use to buy a bunch of different masks (I don't care about the cost), and get a few days of sleep aids. That should sort it out.
The few hours I did sleep with a CPAP were crazy. I forgot that I stopped having dreams. I had so many dreams while I could breathe at night.