I have been ripped off. The story goes like this: I had an F&P HC604 CPAP with integrated heated humidifier and ThermoSmart Automated Heated Tubing with less than 250 hours, which I wanted to sell. I thought secondwind CPAP.com was an excellent choice and sent them all the necessary information and was informed I would be given $280 for the same. Though it was less (they offer the same on their site for more than $350), I was okay with it, since I wanted to give it up and go for a new F&P machine. I informed them I would accept the payment if they agree to pay for the shipping. They sent UPS label, and I packed off my machine to them. Now, this is where the story gets interesting. I use PayPal and told secondwind CPAP.com to send me the money through PayPal. They sent me the amount, but PayPal deducted its fees and paid the balance. They deducted the expenses since secondwind CPAP.com sent the amount as a purchase amount instead of money owed. Had I known this rip-off, I would have gone for a check. I am starting this thread to inform people about the rip-off by both secondwind CPAP.com and PayPal. BTW, I called secondwind CPAP.com yesterday afternoon and gave them a piece of my mind. I am not sure after the experience that I have gone through; I would be recommending them to anybody. A lesson well learned.