Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
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( i ) our obligation to provide the products only comes into being when we take receipt of your order , and we confirm your purchase to you by email . 

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