Unverified75% confidenceDecision RuleTime unknown
计算性价比按每克有效营养成本而非总价：120g大管未必比60g划算，若单价高但每次用量小（2cm/次）反而更耐用，需结合用量周期评估
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Unverified规格性价比要看'有效成分单价'而非膏体总克数——120g膏体若鱼油浓度低，实际有效摄入不如50g高浓度款，换算每份EPA+DHA成本再比较79% similarUnverified性价比判断看单位克数用量而非总价：氨基酸沐浴露起泡少、用量偏大，泵头出量约1-1.5ml/次；家庭大瓶装(≥1L)通常更划算，但香精易挥发建议半年内用完78% similarUnverified性价比看'有效稀释后单位成本'而非瓶价：浓缩型1:20稀释后实际每次使用成本远低于即用型，重度用户(常做饭/餐饮)选浓缩桶装更划算78% similarUnverified换算单次成本时以稀释后使用量为准，浓缩型除菌液标称容量小但单次用量仅10-15ml，实际比稀释型更经济；对比时看'每次成本'而非瓶身容量76% similarUnverified性价比应按'每日成本'而非单价计算：营养膏用量极少（通常每日几厘米），大管装虽单价低但开封后6-8周内需用完，多宠或长期使用者才划算，单宠短期补充选小管更实际76% similar
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