I just bought this tonight:
[URL="http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5870206310&rd=1&sspagename=STRK%3AMEWN%3AIT&rd=1"]Black Box 4 port KVM switch[/URL]
My teacher says that Black Box is supposed to be top stuff. So I guess I made out alright, eh?
There are a few Black Box switches floating around on campus here, and a friend who's familiar with them tells me they're quality.
Five bucks... Nice. :D