We both are

The coolest board I had sold was a Kimtron (I think) daughter card for 286/386 based machines. I had a built in 286 processor, video card and 640k of ram. We used to plop two or three of these in a 286/386 machine and you have an immediate 'dumb terminal' network (ok not that dumb) that used to share aplication data off the server... Sold a bunch of these into office settings.

The most expensive setup I sold was to Morton Thiakol (sp) for CAD work.
386, 21" monitor, BNW graphics card (3 ISA slots), 30 Meg HD, AutoCAD V2.x, HP Plotter, etc, etc. --- about $30,000 I had to pull the monitor apart and adjust the pots ... .scared the shit out of me.

The coolest system was to a blind lawyer in East Texas. He was amazing. I had to run out the RS to buy a soldering iron to build him a cable so his 'audio' box would interface into the system. What ever was on the screen was read back to him .... He had a charred finger that allowed him to know when his cigarette was lit.