The cards cost $4.95. There is a $3.00 per transaction fee plus 3% international conversion fee. You can reload the card and there is no cost to do so if you are a AAA member.You can buy a "companion" card for $1.50 which can be used as a second card and act as a replacement if you lose your primary card.
While not the best rate it is on par with a lot of banks, including my own local bank which charges the same. Capital One certainly offers a better deal ($1.50 per transaction with no other fees)