I actually iterated this using mechanical turk a while ago: http://joshua.schachter.org/2008/09/amateur-economist.html http://joshua.schachter.org/2008/09/amat

I actually iterated this using mechanical turk a while ago: http://joshua.schachter.org/2008/09/amateur-economist.html http://joshua.schachter.org/2008/09/amateur-economist.html People's behavior changes at the dollar price, too. $900 is different from $9 is different from $90000.