I have no personal experience but have
heard that the most safe way to make an order is to call - there are more sale guys working in parallel and the lens that is still listed on the web may be already sold for couple of hours. If you call first - then the guy will go and check in person whether the lens is there and you know for sure. Just to avoid confusion and anger.
You guys are lucky to have a company like KEH out there in US. Here in EU the 2nd hand stuff is mostly overpriced in retail ...
