Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
in addition , if you purchase physical goods from oculus , other terms of sale or promotion may apply from time to time . 

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