I see a lot of threads that ask for members to appraise the value of a Parker, including the thread below. This thread shows the kind of discussions that are likely going to show up more often than the members giving an accurate, consensus appraisal of the value and the original poster thanking everyone for their help. Page 3 is where everything starts to go wrong.
http://parkerguns.org/forums/showthread.php?t=7911