I haven't gone to look at these ones, but the last buses Cy-Fair put up were REALLY nice, pretty much all of them were dt466 with mt643s, Cy-Fair ISD does a lot of highway driving and they roll coal at 70+. They maintain their buses well, and are a very well financed school district.
I work across the highway from where these buses are located and can check them out if someone wants eyes on. Last time around their shorties with dt466/mt643 went for about 5k each. There are 2 used bus dealers within 5 miles of this auction site so they scooped up a bunch then slapped 13k price tags on them, none have resold.