Yup, I'd have to agree the price is far too steep for a 12-year old bike. I bought an essentially brand new '93 Wicked Lite for $650 with full XT last summer, and I thought that may have been on the high side.
Unless it was brand new, it's tought to expect $2,100 for a hardtail. Even new, I don't know too many guys who would bite on that.
For reference, there was a minty fresh hyper-clean 10th Anniversary Fat Chance on eBay a few months ago with a Fat rigid fork and full XTR. We all lusted over it, and it wound up selling for a cool $1900. Unless it is a 10th anniversary or a full Fat Ti, you'll be really hard-pressed to come close to the $2k range.
Honestly, and take this for what it's worth, based on the market value of the bikes that have SOLD in the last year, I'd say that it would be closer to a $1,000 bike, at the most. I know that isn't what you want to hear, but that's where they are.
doug