I am a swap card collector and there is no definitve book etc for pricing cards. There is a listing in swap cards
at the moment fora Coles cards catalogue but it only tells you which ones were printed and what they look like and
catalogue number. She has relisted it at a cheaper price (but still too dear) The only way to price your cards
is research (and lots of it) I have bought from you, so you're doing ok. Swap cards are only worth what someone
wants to pay, but that goes for anything really. Good luck