I have an 08 liquid force witness (widely regarded as a great cable board) in the 144 size. I rode it in the 2010 season, it has made two trips to the cable and the rest was all boat. I'd sell it for $100 plus shipping. Its in really good shape with minimal scuffing on the base, no edge dings or gouges.
Also have last years 2011 witness 144 (brand new, still in the shrink wrap) that i'd let go for $200 plus shipping.
Oh, and both are the regular witness, not the grind version.
Email me at email@example.com
if you're interested or want me to send pics. Happy hunting, I love board shopping season. My new SS response and recoil are due to deliver tomorrow!