[canjond]

Just read the blurb and it sounds like that if you have the option to use the service and chose not to and the seller has a no return policy, the policy will be enforced and you can't return a purchase. It also sounds like it will be free for a while (the description states "eBay covers all the costs associated with the authentication process for a limited time"), and then they will start charging. So, it sounds like you essentially will have to pay eBay to authenticate your card, or otherwise void the return.