Replying to rock/rail skis

Every year, sport check has a certain ski that they buy like a million pairs of and then sell REALLY cheap. Last year those were the head mad trix. Now I'm looking for some skis to buy to use early/late season and for rail sessions (im just learning). I was wondering if anyone knew of anywhere that was selling really cheap/crappy twintips that would work for this, or even if you yourselves are selling your old skis for under 400$. Please post with any info, or any sales. I would greatly appreciate it...

Pain is... hitting a parapelegic dead on at 50Km/h while skiing backwards