Well back when I was actually looking for one, I talked to 2 original owners.
Both said basically the same thing.
That purchase price was around 4K...about 1K more than the average dish of the same size.
The people that bought the Birdviews, were, dare I say it, a step above (financially) other dish owners.
But as far as the actual quality of each, the DH may have the edge because to today's technology?
Well, it wasn't until last night, that I actually realized the Birdview brochure listed a dish withOUT a motor!
And, I've seen pictures of maybe two or three installed like that, compared to dozens with the motor!
I agree with your price estimate.
The high end model went for about $3500, with receiver.
And, I think installation cost was on top of that!
As to the accuracy or quality of the dishes, we may never know.
Not a lot of DH dishes in the hands of fellow members.
Actual specs on Birdviews are hard to come by, too.