Depending on how well it has been taken care of it's worth @ most $150 IMO. If it is a pump model, make sure it's in working order, check for rust on the skirt, chips in the interior & exterior finish. It is most likely a 1980's machine. If it's a gravity drain version that's a plus in my book, one less thing to go wrong!
[this post was last edited: 3/22/2011-15:42]