Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
funds can only be used to purchase digital products from noe in nintendo shopping services . 

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