Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
we will automatically bill the payment method you provided for any purchased gift subscriptions at the time of purchase , not delivery . 

```
. OPTIONS: ['Contract by using' 'Arbitration' 'Unilateral termination'
 'Limitation of liability' 'Choice of law' 'Unilateral change' 'None'
 'Content removal' 'Jurisdiction'].