The balance of your Gundam Express Australia gift card will remain on the card for future use if it is not entirely used during a single purchase. You can check the remaining balance of your gift card by following these steps:-
Visit the Gundam Express Australia website.
Log in to your account if you have one. If you don't, you may need to create one.
Once logged in, navigate to the "Gift Cards" or "My Account" section.
Look for an option to check your gift card balance. It may be labeled as "Check Balance," "View Balance," or something similar.
Enter the gift card code or number from your email or the physical card, if applicable.
Click or tap the "Check" or "Submit" button.
The website will then display the remaining balance on your gift card. If you encounter any issues or have trouble finding the balance check option, you can also contact Gundam Express Australia's customer support for assistance.