Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
the provision of virtual items for use in supercell games is a service provided by supercell that commences immediately upon acceptance by supercell of your purchase . 

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