Last year there was someone selling their 3 year old TL with the frame and some other accessories for $4000... That was listed on Craigslist in TN I believe. She had upgraded to a larger throated machine.
I'm sure that isn't much help..
If you ask me, it sounds kinda high - especially if it has had a lot of quilts done on it. A lot of those dealer machines get used A LOT.
On the flipside.... I hate to sound wishy washy... I don't know how much a new one goes for these days....