A player showed me that there is an incredible disparity in pricing between two Paizo sources for the same product.
A dose of Belladonna according to the core book is 100 gold, according to the adventures armoury 2 gold.
Wolfsbane as per the core rulebook 500 gold, adventurers armory 5 sp.
Is there a reason for this enormous difference? And which source is correct, for example as far as PFS is concerned?