Yes, when you buy tickets online, you pay a processing fee
If you join their club for $15 you get rewards and are never charged the fees. They give you a 1-888 number that you can call if you can't get through to them. I called them and they refunded the service charge since I joined the membership.
If you purchased them from the AMC website, you can request a refund online prior to the show time.
Thanks! Your answer is awaiting moderation.