Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
if you cancel this contract , we will reimburse to you all payments received from you , including the costs of delivery ( except for the supplementary costs arising if you chose a type of delivery other than the least expensive type of standard delivery offered by us ) . 

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