It's hard to justify a top $$$ purchase on something as simple as this batmobile. It doesn't translate well to 1/6, much like the Mondo figures IMO.
I'm sure there is a market for it though.
Didn't the HT versions of 66 B&R sell like crap? I mean, yeah, they eventually sold out but it took a while, and were often discounted IIRC.
Not worth the trouble IMO.