I've purchased from secondwindcpap in the past and had a good experience Resmed S9 Auto in great condition still pumping years later. When I went to get a replacement for my husband last week, their prices are a lot higher than CPAP.com unless you want the standard version with wireless. The S10 Aut...

I had this issue when starting CPAP, but the issue was nasal pillows coming off too easily so I switched to a regular nasal mask.

In your case I'd suggest leaving the mask on your face and just disconnect the hose at the attachment point to make it easy to put back on.