$25 (or more) easy.

If you used a Visa, MasterCard or Diners Club to make purchases in a foreign currency between February 1, 1996, and November 8, 2006, you are entitled to a refund of fees charged for these credit card transactions. These companies inflated their base exchange rates before they applied their usual 1-3% fees, and they got caught.

You can request an easy refund of $25 or you can itemize your purchases.

Get more information here:
CCFSettlement.com

If you didn't receive a refund request form in the mail, you can request one here:
CCFSettlement.com - Contact Us