I am getting rid of my first two masks that I bought that just weren't right for me. The first is a Philips Nuance Pro. I used this mask for a grand total of an hour or two. It just didn't jive with my nose. All three mask pieces are included.
The second is an F&P ESON. I used the medium size for about a month, but it comes with all three sizes included. This is a great mask, it just didn't work with my beard.
In terms of pricing, I have never sold anything on this forum before, so name a price you think is fair and we'll go from there.