长得好看能当饭吃吗：提升认知的33个经济学常识
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122：优惠券其实是价格歧视
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Posted Oct 8, 2023 at 7:26 am.
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121：价格歧视 商家为什么要麻烦顾客领优惠券，直接降价不是更能吸引顾客吗？
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123：一级价格歧视，讨价还价
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