Yes, I've bought a couple of used lenses from them (some years ago though). I found them to be professional and courteous. The Summar they sold me was the cleanest I've ever seen. They even went and found it for me before I bought it, shined a light in it to ck for fungus or haze, etc. I would say their rating is similar to KEH, and unlike KEH they are usually able to put their hands on the gear and let you know exactly what you're buying. National Camera Exchange is also a great place to buy. I love KEH, but they don't have the items in front of them when you call, you just have to hope the descriptions are accurate. No trouble if you need a return though.