Retail­ers aren’t in sales; they’re “in the per­cep­tion busi­ness”, says Jonah Lehrer while dis­cussing how we per­ceive goods of vary­ing prices, espe­cially dis­counted goods.

Con­sumers typ­i­cally suf­fer from a ver­sion of the placebo effect. Since we expect cheaper goods to be less effec­tive, they gen­er­ally are less effec­tive, even if they are iden­ti­cal to more expen­sive prod­ucts. This is why brand-name aspirin works bet­ter than generic aspirin, or why Coke tastes bet­ter than cheaper colas, even if most con­sumers can’t tell the dif­fer­ence in blind taste tests. “We have these gen­eral beliefs about the world⎯for exam­ple, that cheaper prod­ucts are of lower quality⎯and they trans­late into spe­cific expec­ta­tions about spe­cific prod­ucts,” said [Baba Shiv, a neu­roe­con­o­mist at Stan­ford]. “Then, once these expec­ta­tions are acti­vated, they start to really impact our behavior.”

I sup­pose this goes some way to explain­ing why some mag­a­zines are gain­ing read­ers despite increas­ing their sub­scrip­tion rates (The Econ­o­mist, for example).

The lat­ter via Kot­tke