Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
you may only purchase services for your personal use or to give as a gift unless otherwise expressly permitted in these terms . 

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