I'm seeing a message when I try to buy MLB.TV.
If you have already bought MLB.TV and you are trying to purchase, you may see the message: "Our records indicate you have already purchased a similar product."
To verify this, please click on "Edit Profile" after logging in through the "Login" button on the top right of most MLB.com pages. This will bring you to your Profile Page.
Under the "Manage Subscriptions" heading you can verify your MLB.TV subscription status.