It's pretty dated at this point (and I don't know of anything recent like it), but playing M.U.L.E. is a little education in microeconomics all by itself.
That was a great couch competitive game. Trying to goad a player into bidding more than necessary for something they needed before they turned around and stuck you with it was good fun.
https://en.wikipedia.org/wiki/M.U.L.E.
Ok, I see that Planet M.U.L.E. is a recent remake that may actually be alive and kicking, good deal!
http://www.planetmule.com/