My question is whether buying CPAP supplies through a medical supplier is actually beneficial or even necessary. I've been doing this for years. Recently I was using HeartStrong sleep, which did a great job. My insurance plan changed, and they are not in network. So I'm looking over other companies that are in network with my UHC Choice Plus plan. On a whim, I checked Amazon for the certain mask that I wear. It's $25 cheaper than any online CPAP store price I can find and what I paid before . Other than the nothing going to my deductible, is there a disadvantage to just ordering my supplies on Amazon or other supplier?