Let's say a card #/25 books for $100. How do YOU determine the value of shorter printed versions like those #/10, #/5, and so on?
It all depends on what you need the value for.
well....depends on the player.
Take a 2010 Bradford for your case....
#/25 = $100
#/10 I'd say $150-$175
#/5 I'd say $250-$300
#/1 I'd say $500-$600
AU, JSY, and AU/JSY variations a bit more....same with Brand.