Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
this right does not apply to any goods that have been used , or are stated by us to be non-returnable , including any items or goods that have been personalised or modified in accordance with your instructions . 

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