They were made by a third-party company which is a pretty good indicator of a tiny production run. BBTS had them for pre-order for a while, I considered getting one (saw some shots using it as a base for DCUC) but just couldn't justify the price tag (I *think* it was something like $180 but I could be way off on that).
Thanks, Jim! Well, my Transformers collection has begun to grow exponentially and I LOVE the look of this set. If anyone knows where I can find one, PLEASE let me know. Even if it's overpriced. I MUST have this set!!!