Surplus can be fun, but here are some advice notes:
 
-Virtually no machines are complete.  Hard discs especially tend to be pulled.  Only "full" box I ever got was a HP 712/60, and probably because nobody could figure out how to strip it.
 
For cases also inspect for missing drive carriers and such.  I'd rather buy a $5 case at Surplus than a new $30 one, but often drive carriers and rails disappear
 
-Cables you'd want to test with are rarely handy.  If you have a VGA->Sun adapter cable, it might be worth bringing along to test the dozens of Sun monitors always present
 
-Don't bother for desks.  I wanted a metal desk (wood desk strains under weight of monitor), and price was USD 150+
 
-Bear in mind a slope outside front door, for when you're shoving a cart with 83kg of
equipment on it
 
-Recognize size limits of your vehicle.  I did a nasty number on the interior of my car when I retrieved an IBM 3174-1L terminal controller