The question pool is maintained by the
National Conference of Volunteer Examiner Coordinators and is available for free from their website and others, including the ARRL.
The ARRL publishes three Q&A books, one for each license class, that are available
for purchase from the ARRL Store.
ARRL's Tech Q&A,
ARRL's General Q&A, and
ARRL's Extra Q&A. Each book is $14.95.
The ARRL also publishes license study manuals, one for each license class, which are available for purchase from the ARRL Store. They cost more than the Q&A books because they have more material. The ARRL also now publishes the Gordon West license prep books and they are available for purchase from the ARRL Store.
The FCC allows Volunteer Examiner teams to charge
up to $15 per exam session. This fee, if any, is collected at the exam session. Some VECs direct their VE teams to charge the full amount, some don't charge anything. The $35 is a license application fee charged by the FCC and collected by the FCC after a license application is processed.