Stamina 950 Air Bike. Lightweight, comfortable seat, built-in resistance. This is a compact, inexpensive way to get your daily exercise. Works upper and lower body. This sold yesterday to a very nice, well-spoken young artist and musical person who plays native American flute. He's recovering from an operation and this bike is just what he needed. Lives on the third floor! Suggested resale price of this in excellent condition: $60. I can't tell exactly what he paid or you'll know either that I'm a push over or the world's worst chiseler. Here's a link to a newer-style Stamina upright exercise bike: http://amzn.to/2wDfsaO