i sold an old school 1995 Balance AL-150, a high end aluminum bike from cali. Id only had LX stuff, and was in really good shape. I got about $140 for it. No idea why, but it was a great bike, and really light (22lbs, and for 1995, that was insane).
So id guess you should be able to get maybe up to $180 Max.
Also depending on its head tube sizing and setup, could bring in more. 1" headsets are limited to just a few shocks, but a 1-1/8" head set up allows for almost any fork, helping a potential buyer see upgrading it worth a few extra bucks on ebay.