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会计学4.1DefinitionPricediscriminationmeansonefirmsalestheidenticalgoodstodifferentconsumerswithdifferentnetprice.(Philips,1983)Netprice,subtractproductdifferencefromgoodsprice.Ifpricedifferentiationjustreflectsthecostdifferenceofsupplyingtodifferentconsumers,wedeempricediscriminationdoesn’texist.Ratiotest《Harrypotter》inpainlypackededitionvs.deluxeedition,eg.ConditionsofpricediscriminationMarketsegmentationKindsofarbitragesInfluenceofarbitrageThreekindsofpricediscrimination4.2Perfectpricediscrimination(2)ComplexcaseProfitmaximizationProfitcompare(3)UniversalcaseHowtomakePerfectpricediscrimination优惠券的使用(shǐyòng)(JournalofMarketingResearch,1978)4.3Third-degreepricediscrimination(Multi-market)HowtopreventarbitrageProfitmaximizationWelfarecompareProfitandsurplusDifferenceonwelfareConclusion三级价格(jiàgé)歧视实例1三级价格歧视实例(shílì)2:迪斯尼世界门票价格,20064.4Second-degreepricediscrimination4.4.1indirectpricediscriminationbasedontime4.4.2Indirectpricediscriminationbasedonquality例:参考价格对高价位产品(chǎnpǐn)的影响4.4.3Indirectpricediscriminationbasedonquantity4.5ComparisionamongseveralmethodsinnonlinearpricingProfitandwelfareAsimplemodelUtilityfunctionGeneraldemandfunctionCase1:perfectpricediscriminationCase2:MonopolypricingCase3:Two-parttariffComparisoninwelfareeffectConclusion4.6QualitydiscriminationComparabilityinstylizedmodelandconclusionConcludingwords内容(nèiróng)总结