Now, correct me if I'm wrong, but the last time I checked, I, as a wizard, am a card carrying, funny hat wearing, MEMBER of the Pathfinder Society. One of the largest groups in the inner seas region formed around the gathering of knowledge. The Pathfinders have "vast libraries" of arcana that they have access to and count amongst it's membership several powerful wizards.
You're telling me that Aram Zey is going to tell me to "go get bent" if I want to copy down some spells from the society's huge collection? That I'll be forced to wander down to the market and buy a scroll like some common adventurer?
The rules for accessing an NPC wizards spellbook is laid out in the core rulebook, along with pricing, and you're saying we can't use it?
@#$#&!%*
Access to spells can be restricted during the adventure due to the environment, and sources can be resrticted to the additonal resources the player owns. Otherwise players have access to every single spell allowed.
The cost of scribing spells into your book is simple and concise, as well as the premium you are required to pay to access anothers spellbook. The only time you don't have to pay that premium is when you are adventuring with another wizard and you freely exchange spells.