What I never understand about consumers is the tenacity to complain about the price of one product A, then compare buying product A to product B which more expensive, and doesn't fill the same gap for product A.
Might as well just say, "HECK $400! For another $800 I could buy a car!"
The ACD is an entirely different type of product. Yes, it has hub features, but a user needs to want the 27" display feature first and foremost because it's a display. Then you have to want to spend $1000 on your display.
The Belkin and Matrox boxes are not meant to compete with ACDs, nor Mac Minis, nor PCs, nor anything that isn't a hub . . . . hence the reason for the reactions to it's outrageous price.
Everyone wants a 27" ACD
But really, if I'm "considering" buying this hub, and I look at what I get for the price....then I look at the ACD and see that I get the same hub features, all $400 worth. If I was going to spend that 400 on that amount of features, I can look at the ACD as now only costing $600. My total spending is still $1000 instead of $400, but the value I receive is better at $1000.