Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
for each month that your monthly subscription is active , you acknowledge and agree that headspace is authorized to charge the same credit card as was used for the initial subscription fee or other payment method as set forth in section 2.6 ( h ) ( the `` payment method '' ) in the amount of the then current monthly subscription fee . 

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