Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
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your arbitration fees and your share of arbitrator compensation will be limited to those fees set forth in the aaa rules with the remainder paid by headspace . 

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