Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
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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 ) . 

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