When I bought all of my gear off of craigslist, I got 3x ball-lock kegs, and 1x pin-lock. I am all setup and running with the ball-locks, but the pin lock is just sitting there. All the kegs were in good shape, although I did replace the gaskets.
I'm hoping there is someone out there who is interested in a trade the other way? I live in MA, but would be up for shipping if it isn't too expensive.