Not sure what the individual cogs are actually worth not many people buying or selling these probably $5-10 each for most if the NOS and not much if there used. Considering the whole freewheels go for $20-50 depending on condition and gearing and take a while to sell on ebay based on experiance. I would agree that maybe selling them to Pastor Bob is a good idea being he is one of the very few people out there still rebuilding vintage freewheels most shops mechanics stopped doing this in the mid 80's.