长得好看能当饭吃吗：提升认知的33个经济学常识
多云下的蛋
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124：二级价格歧视，量大从优
4 minutes
Posted Oct 9, 2023 at 7:26 am.
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123：一级价格歧视，讨价还价
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125：三级价格歧视，专门定制的歧视
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