Had to research that a little. Didn't make sense to me.
found this:
LIMITED TIME OFFER: The first time you add cash with a MoneyPak, the purchase fee will be refunded to the Prepaid Card.1
Green Dot will refund the MoneyPak purchase fee (up to $4.95) directly to the American Express Prepaid Card within fourteen (14) business days of the date of the reload. Available only to customers who have not previously reloaded the Prepaid Card with MoneyPak and have an active Card when the credit is applied. One credit per Card. MoneyPak funds must be applied to the Card by May 31, 2012.
http://goo.gl/Cxwpf