Sewing Machine Depreciation and Blue Book Value. i wish good morning to everyone.  A very good friend of mine who was an avid sewer passed away 4 years ago.  She had a Viking 1 bought 1997 and a Viking Designer 1 (bought 2002).  Now (January 2011), her family is willing to sell the machines to me.  I am not familiar with the depreciation value of sewing machines, but was wondering how much should I offer.  Thanks for your time and consideration.  
Tags: blue, book, Depreciation, Machine, sewing, Value