At the very bottom of the linked page is small print offering a free Head & Shoulders mail-in rebate offer - up to a $12.99 purchase! You muct call 1-800-843-3543 for details. Mail product and original cash register receipt for up to $12.99 (including S&H) refund. Limit 1 refund per name, address, household. Valid 1 year from date of purchase.