I know people who use CPAPs. They have to have a prescription for those. But the machine is little more than an air pump.
It is also not legal to sell them used. So follow that money trail.
You need a prescription to purchase a mask but not for mask parts. If you buy all the parts separately you can assemble the entire mask from the parts without a prescription.
Be sure to tell them to take their own machines to the hospital if they need to go, they cannot be sterilized enough to prevent the spread of infectious diseases the last user had. Or MOLD.
Those adjustable Sleep Number beds they advertise that use air, form mold between the layers in humid areas plus they are slow to adjust. Use the Temperpedic brand. There is a Wall Hugger model, and with a dr script you get a percentage off as well if you are Military/Ret. Military if you push it. Sheets are CHEAPER on Amazon, so don’t buy the store’s ones, lower thread count. Got super soft ones on Amazon for $90 for a split King. His mattress is firm, mine is extra firm.
You can get them from Chinese companies. It is illegal but you can get them.
Another place is yard sales, people die and they have all this medical equipment. I know people who buy medical devices to give to those who can’t afford them.
Depends, walkers, wheel chairs...we were going to buy an electric wheel chair for a paraplegic in Mexico for almost 3K we got a barely used one for $750.