I wasn't really LOOKING for an MK9,but I found one on GunBroker. The auction was ending on the same day I bid. Auction was no reserve, so I bid a max of $400. Closing bid was $357. I got a like new MK9 with four magazines(one 6 round MK9 mag, and three 7 round P9 mags--which is OK because I have a P9) for $357, so I think that's a pretty good deal.
Next step is wood grips and a good polishing.