« on: January 23, 2015, 07:13:18 PM »
Mostly good experiences. I always google the name, that usually already indicates plenty.
I've traded maybe ~10-15 lenses used, and only one time got bad experience. I bought lens from POTN. The pictures were not perfect, so I asked about the condition. He said nothing on the lenses.
So when the lens arrived, the front element had lot of scratches. I sent him email complaining about that. He was really slow at responding. One time he responded "Sorry for delay, I had to travel to Seattle for XYZ."
Funny enough, I live in Seattle so I responded "Great, I live in Seattle too so I'll bring you the lens and you give my money back". Surprise surprise, no reply for a while until he "returned" home. He paid my money back, I shipped the lens back. So I took loss for the return shipping. Lesson learned, if photographer takes bad photo of the lens, there's reason for that.
In general, I still favor slightly used quite often.