Our best deal is a lightly used Airsense 11 CPAP for $500 or a lightly used Airsense 10 CPAP for $450 because both come with our 3 year warranty. Add the machine to your cart and add a mask to your cart and you will have everything you need. Phone: 952-388-9518 ---Want to sell your machine? Go to Contact Us and send us an email with a picture of your machine and we will make you an offer