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