[quote name='ashram']is this the heavy version or the cheap plastic version?[/quote]
This is the heavy, metal version. It weighs about 2.5 pounds and stands just under a foot tall in robot mode.
The design behind this was to make a figure that looked as much like Prime in the television show as possible, in both the truck and robot modes. He's also very posable, with joints at the shoulders, elbows, knees, thighs, and ankles, a swiveling waist, and even individually posable fingers. You can also open up his chest and pull out the Matrix.
I paid full price several years ago and don't regret it.