You must pay shipping of $4.95, but this is still a really good deal.
Must be 13 years of age or older.
From Capezio:
*Ballet Slippers are valued at approximately $18.00. Orders must be placed through www.capezio.com/freeballetslippers. Shipping & Handling fee of $4.95 applies. Random style and color selection made by Capezio. Free style/color/size based on availability. Offer valid on adult sizes 4 – 12 only. Free product may not be returned or exchanged. Promotion valid July 16th, 2011 through October 1st, 2011; while supplies last. Ballet Makers, Inc. reserves the right to deny and/or disregard any rebate request deemed to be false, misleading, fraudulent or inconsistent with the terms of this promotion. Any claim lost or misdirected is not the responsibility of Ballet Makers, Inc. Void where prohibited or restricted by law. Offer valid for U.S. residents only. Must be 13 years of age or older. While supplies last.