Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
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these items are not redeemable or subject to refund and can not be traded outside of the services for money or other items for value . 

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