Background: I've had SA for at least 20 years. Back then I had insurance and was able to do a sleep study and get a machine. Eventually, I got a new machine, but it's about 10 years old and no longer working well. I no longer have insurance!

I came across a site called easybreathe.com and called them. They can have someone evaluate you and give you a prescription to use on their site and then you can buy a machine. He said they have machines that will autoregulate for me and I can get on a payment plan.
I need to know if this is legit. Can I really get a new machine without a current sleep study? Will the machine know what levels to adjust to if I haven't had one? Hope this makes sense. I just don't want to buy a machine if I really do need a sleep study first. Thanks!