My doctor has me on night-time oxygen (not a cpap) pending a sleep study which will likely happen next month. My oxygen machine is a rental, costs me 29 a month (billed at 500 but costs 29 with tricare negotiated price and what standard covers). Is it standard to rent these items instead of owning them? Do you rent your CPAP instead of own? The only other piece of medical equipment like this I have had was a bone stimulator which I owned so I am just wondering what is standard with this. Thanks.