How can I empty the App Store balance?

Hi,

This previous answer from an Apple communities member should help you:

‘You can either spend it or ask Apple to clear your balance:

> Spend it: Apple advises that, if your credit balance is less than the cost of an item on the iTunes Store (including App Store), then you can add a credit card to your account. When buying an item, your remaining store credit will be used up, with the remainder of the purchase price charged to your credit card.

> Ask Apple: contact iTunes Store support for assistance:

Contact iTunes Store support’