I currently have alertons vlc-550 and vlc-853. The building that these were supposed to be installed, never finished. The owner, lets just say that he wasn't happy with the company that was doing the job, there is a long story to this. Well he ended up passing these along to me. I was going to keep and use them for learning but decided to sell them instead. I currently use ClearScada, Telepace for our plc's in water management. I can tell you is, they have a date of Oct, 2011 and when I recieved them, they where still mounted on the mounting plate along with the panduit rails and terminal strips. I did connect power to the transformer to power them up. As for the programming I couldn't really tell you if they where or not. They are in excellent cosmetic condition.
Here are some pictures, email me if interested, make me an offer.