I use 2 years ago the app but only for buy baby things in person, nothing electronic. Right now I need a camera because the mine is so heavy, they doctor said is carpal tunnel and I can’t handle for take photos on events. There is a guy that have one that is perfect for me and a lot of more cheaper than other parts, he said is because he have a last minute emergency and he need the money. I ask for the serial number and he send me a photo of the camera with the serial number. He is in California and I’m other extreme of the country, suppose the camera isn’t used too much, only for family photos. If I make the transaction and the camera don’t arrive or isn’t working like he said, do they return my money? Somebody already have an experience with that?