It's the same as their R2, which was pretty much all plastic too (I didn't like it at the time too). So, it shouldn't have come as a total surprise.
Though I thought the various life size Baby Yoda's were fairly priced, if not dirt cheap, as it was about the same price as some deluxe 1/6 figures. I buy a lot of life size items, so having to pay only a few hundred was kind of a novelty.
Love my Attakus Probe Droid, Ordered in 07 then Attackus jacked it up from 400.00 to like 700.00 something like that, I kept my order and BBTS honored the 400.00. Metal and Polystone
I think Sideshow did a great job with this Probe Droid. Good build quality and paint apps. The light and sound are a nice touch.
I was considering the acrylic rod option, but based on the weight, I'm sticking with the metal rod provided. When I talked to the manufacturer they suggested that it could warp over time.