The value of a specific physical Gift Card or e-Gift Card cannot be increased in value. However, you can buy another e-Gift Card and then merge this with your existing e-Gift Card or your physical Gift Card. Simply register your existing Gift Card (either physical or emailed Gift Card) and then purchase a new Gift Card online . Once you have received your new e-Gift Card via email - visit the ‘My Account’ section  and complete the ‘merge card’ process.