Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
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you may also be asked to click `` i accept '' at the appropriate place prior to your purchase of access to the products . 

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