Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
7.4.2 hosts and co-hosts may agree on a fee ( `` co-host services fee '' ) in consideration for the co-host services provided by the co-host . 

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