Re: How much? They gotta be kidding, right?
A Bugatti Veyron is an apt example. A toy for the wealthy.
This is a showpiece, it'll be bought with a matching Mac Pro to show everyone that you're the "real deal". That's Apple's market these days: the lifestyle entrepreneurs who spend their own (or investors') capital on whatever the most expensive equipment is. Actual "professionals" who have this kind of money to spend on tools will go for something with proper support from a manufacturer with a better reliability record than Apple's current one: if it's your livelihood, you do not want to be waiting for AppleCare...
All we wanted was the previous Mac Pro tower. Something that cost maybe 10% more than a competitor, but offered easier upgrading. This thing costs at least 30% more than competing workstations... and (subjective, I know, but) it looks awful.