Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
other purchases : purchases of other products and services through the vimeo service are subject to our payment addendumand to other terms and conditions that are presented to you at the time of purchase . 

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