I noticed that too.. that's classic disruptive innovation. Expand doward into a market that previously couldn't afford the technology, forcing your competitors to ditch the low end and concentrate on the more profitable high end.
That might have been NeXT's goal, but they didn't achieve it.
In the video, Jobs says that three grand is the upper bound on what their polled potential customers are willing to pay. The first NeXT cube had a base price of $6,500.00. They also didn't meet their original deadline either, going over by more than a year.