So, I have $4.67 in my Microsoft account, and I want to buy Injustice, which is $4.99 with gold. There doesn't seem to be any way to split the cost between my Microsoft account and Paypal or a credit card. What do I do?
Proceed to payment with PayPal or cc and after pressing buy it will ask you if you want to use your microsoft account balance and pay the rest with the selected payment method.