Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
any prices posted in us dollar or non-us dollar currencies by linden lab on the service do not include any applicable sales tax , unless specifically noted that it is tax inclusive . 

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