Callaway irons only have a serial number on the 8 iron if they're off the shelf bought.
Anything throught the Custom fit - and that maybe only a change of the grip or a tweak to the loft - an it won't have a number.
Serial numbers are not the be all and end all of deciding if something's fake.
What's to stop a Forger going into AG and noting down a serial number and adding this to his forgeries...?
Golfbidder are as sure a bet as you can get that the club is genuine as far as the 2nd hand market goes....
And, Yes they buy low and sell high.
They have to make a profit and you don't have to sell to them.
They mostly buy from Pros trying to shift stock so the prices are very much based on Trade values....
