I have a Handy lift, the basic model. I love it, it's very well built and seems like it should last forever. The SAM is the next step up. Think they're about $1400 new. These lifts are commonly found in dealerships & repair shops, they are pretty much top of the line. I paid $600 for mine. $850 seems fair for a SAM in very nice condition. If it's beat up/worn, I'd offer less.