I saw them at the car show in Philly a few years ago too. I wasn't impressed though. For a $50K truck, it seemed like too much plastic, and I was surprised that it didn't have a CD player on the demo model. LOTS of plastic, smallish cab, like a ranger. I dunno where in the hell they came up with the $50g tag.
I didn't like the sideways opening tailgate either.
And the fact that these things were sitting on the lots with price reduction after price reduction, not getting sold or ordered for that matter ought to tell you something too. I'm surprised that you can't find a "left over" still.
A good thing does not have a short production run, "Limited Edition" or not.