I linked to
this vise before but I wonder if he would come down on his price. He is pricing this 3" vise higher than his 4 and 5 inch Kurt vises so this guy knows the 3" vises are rare. Yeah, I know its not a new one but if he will come down to maybe $200 or so then it might be worth it. Someone drilled to holes into the bed. This won't affect the function of the vise but that right there drops its value significantly. If you are at all interested in it, try negotiating. He might just come down far enough to be worth it.
Oh yeah, these 3" vises are rare but they are not that rare. Another will pop up eventually if you can be patient.