Apple id balnce

Unless you are changing your region, you should be able to change the payment method without zero balancing you account.

Buy something more expensive and pay the balance with a credit card or contact iTunes Support and ask them to zero balance your account. See the Apple Support articles below for contact information.   

iTunes Support – world wide   -

Apple Support schedule phone call     -

Billings and Subscriptions   -

If necessary, try Twitter

https://twitter.com/AppleSupport.   - 

Hello ~ This is not Apple Support we are an end to end user forum…you know…people like you and I trying to help each other with questions and concerns about all things Apple. You can contact Apple by going to upper right hand corner and click on Get Support. Also take a look here paying special attention to section 4:

If you can't remove your last payment method or use no ...

~Katana-San~