Oh zebpaint said it all. I had a brand new CPAP mask listed on EBAY and I paid out of pocket over $100 for the mask. I changed styles and when I reordered they sent the wrong one. I wanted to get my money back, saw others selling on Ebay , and had my auction up to $36.00 in 3 days before they took the listing off. To this day there are still masks being sold on EBAY and as zebpaint said, no one would buy one unless they needed it. With medical supplies costing so much , those without insurance never get a break. I listed the same mask and I encourage others to go to  cpapauctions where they willl list your items. I did that but unfortunately did not receive anywhere near what I paid , nor what I had bid when it was on EBAY.