Payment and subscription

Standard sales tax in the US is 8.25%, and your area might be taxing the product as well.

59.99+ (8.25% of 59.99) is 59.99+4.94 = $64.93. You should add another $5 if possible, and the transaction will succeed.

That item is taxed in your area. Put in more store credit or a different payment method.

(251865)

You may need to account for any tax added to the subscription fee. All of my subscriptions have an added tax.

From that, it looks like you need to contact iTunes support for help with this.