Purchased new in April 2001, very carefully set up prior to break in. First oil and filter change after 1/2 hour around the neighborhood. Second oil and filter after one tank of gas on easy trail ride. Third change after first and only weekend of riding. Prior to first ride I did all the normal WR Set-up that I did to my 400. ie Throttle stop, Jetting, Twin Air filter. The equipment upgrades are: DSP W/ limited production extended length (quieter) rear section and tapered head pipe. Renthal bars W/ guards. market price seems to be about $5,300.00.