Ok there are 428 Hours on the used unit Insurance is saying that they will not and do not cover durable medical equipment
I recently had to buy a machine w/o insurance coverage even though it generally covers CPAPs (failed sleep study, I posted my "story" elsewhere on this forum).
Out of desperation, I went on eBay and found an F&P Icon Auto with only 36 non-resettable hours for $300!
It is an excellent machine for the price, and I would have actually paid more than that with insurance coverage as the DME prices these things sky high and my policy only covers a portion of the cost.
Admittedly I was lucky. eBay does not allow CPAP machine sales so sales listing are removed when found.