Duplicating an entire spellbook costs 1/2 as much and take 1/2 the time.
Scroll Cost and the Sale Price from Book are affected by a costly material component. Add the
component's cost to the scroll cost. Add 1/2 the component's cost to the Sale Price from Book.
The Fee to Copy from another spellcaster's book is limited by availablity and increases if the spell
is rare or unique.
Independent Research takes 1 week per spell level and is, of course, at the GM's discretion.
Independent Research for cantrips (0th level spells), although not explicitly stated in the rules,
should not be permitted.