[Elecraft] OT: morse keys , pricing

[Johnny Siu]

Hello Group,
 
I seldom use CW in the past.  As I become older, my interest of CW comes back.  From time to time, I see many CW keys available in ebay at a variety of price range.  How can I know the prices are right?  Any web sites about morse keys collection?  Any publication about history of famous morse key collectors?
 
Sorry for the band width but I know there are many learnt expert in this reflector.

TNX & 73,


Johnny VR2XMC