Replying to WTT/FS: 100mm PX brake for 80/90mm PX brake

I know this is kind of a long shot, but I'm going to try anyway. I bought a pair of PX 12 Ti wide bindings with a 100mm brake and I want a smaller brake to fit my fairly narrow pair of Coreupts. So, I'm looking for a pair of new PX style 80mm or 90mm brakes to trade for my pair of new 100mm brakes. I'd also be willing to sell these brakes for $30 or so shipped if I can find a pair that I need on the internet somewhere.