[kotaKat]

... much like we have the sketchy telehealth services out there, some online CPAP shops will have 'prescription renewal' services available for like $50-100.

If you already have an OSA diagnosis you don't need a new sleep study for a new script provided the doctor is just willing to sign off a new prescription for supplies.

I've had a CPAP part failure when I traveled - I used a Dreamstation Go with its special 12mm tubing. The tubing split and I had a hell of a time finding replacement 15mm tubing in the city I was in. I stopped into a random durable medical equipment supplier and went "heyyyyy can I buy a hose I'm really screwed right now!" and they just slipped me a new hose out the back door and shook my hand. Then I had to have a friend 3D-print me a hose adapter... field-expedient medicine is fun.

My current travel setup is now designed to accept as many standard parts as I can ('standard' 15mm tubing available at Walmart/Walgreens/CVS, a 'standard' CPAP mask, and the machine is adapted to use USB-C Power Delivery so I just need a 100W PD source or better to run everything (even battery).