I don't know about dipoles, but you can find KEF Q series monitors, very nice ones, here on the 'Gon, for just under $200. I have been using Q15.2 for surrounds for 5-6 years now, and they haven't disappointed me yet. They have matched well with the two different speakers I have used for mains, too. Can't go wrong with them, IHO.
Good luck,
Dan
Good luck,
Dan