Sure, considering the base configuration cost $12000 with no extras, the previous owner most likely used a cheaper external hard disk.
I am guessing its use was as a glorified network workstation. A very glorified one at that.
To have a 400mb drive from the start would had added 5000 or so to the price tag, plus Nubus Video, Monitor, Keyboard & Mouse, Software, and you have an investment of well over 50000 by the end of it.
How on earth did people afford this is my question.