OK, here is my experience with auctionsherpa.
I bought the smartgun from him on ebay back when it was up for $999. The pictures of the smart gun are to die for, so I was super excited and decided that instead of buying a legit pulse rifle which was still available from Hollywood Collectibles in the green color, I'd throw down for this rare bird.
I have no experience with prop weapons or reproductions, so I don't know how they are supposed to feel. When i put my hands on this thing, expecting it was made with metal motorcycle parts, and everything else, and then it turns out to be plastic everywhere, it flexes, etc. Looks great on the wall, but now the same item is being sold for 2.5x so go figure. I guess what I got was a recast of Matsuo's work. Oh well.