How to determine value?

How does one determine the value of a used/preowned TM?

My husband and I are going to view a 1994 3023 TM today that is listed for $7997 with a dealer. It's only been owned by one person and hasn't been smoked in.

Here's a picture of it.
[IMG]http://www.kcrv.com/inventory_detail.asp?formname=new&from=search&curr diid=670339&tab=&site_type=dealertemplate&navigate =true&searchtype=AN&isIFRAME=false&req

I really appreciate everyone's help. I have tried doing a search on the topic, but can't get that feature to work.

Once again, thanks a bunch!!!

Angela