The TV show in Canada called "Storage Wars Canada" had someone find a bag of original series Transformers toys, which they took to a recent TFCon convention to get appraised. The clip is on Youtube and can be seen here with some details of the person and the toys in the bag.
(the voice at the end sounds like Peter Cullen... so I wonder if the show's producers commissioned him for it - maybe he was a guest at TFCon that year)