All working used digital cameras. I used to run an Electronic store, this is essentially what's left over. Make a decent bid / offer on the entire lot. All are good and work. A ProAm was a larger body camera that was up from the pocket style has a much bigger better lense and is able to give great pictures. The more glass in front of the sensor, the better the picture will be. Mega pixels means nothing if you're looking through a pinhole lens.