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Marginal revolution gives us
http://www.marginalrevolution.com/marginalrevolution/2006/06/price_discrimin.html
Travel website gives lower prices if you sort the prices lower to highest rather than the reverse. The comments mention other cases of different returned prices, based on starting configuration (baseline + features, or high end - features) or how narrow a search was.
http://www.marginalrevolution.com/marginalrevolution/2006/06/price_discrimin.html
Travel website gives lower prices if you sort the prices lower to highest rather than the reverse. The comments mention other cases of different returned prices, based on starting configuration (baseline + features, or high end - features) or how narrow a search was.