Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
gifting codes can only be used once in the country for which they were purchased and can not be redeemed for cash , resold or combined with any other offers , including free trial . 

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