In 2020, regular MCAT registration is $320. Late registration costs an additional $55 ($375 total).
If you need to reschedule your date or change the location of your test center, you will have to pay an additional $95 for each service if 29 days in advance, and $160 if within 15 days prior to the exam.
If you need to cancel, you may do so with more than 15 days notice, but will only receive $160 back.
International fees are in incremental $115.