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"Caveat emptor.com"~
"Yet customers may feel it unfair for retailers to charge customers differently for the same product, based on hunches about how much they can be stung for.
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Maybe the rise of price-customisation software will spawn rival apps that help consumers defeat it, by disguising their trail of clicks. In the meantime, online shoppers might look at ways to avoid appearing like moneybags. Surf on a PC, not an Apple. Start by visiting a price-comparison site, then—on arrival on a seller's site—feign interest in its cheapest stuff. Having made your choice, dawdle on your way to the checkout page. The internet may make price discrimination easier for retailers; but in online stores, as in bricks-and-mortar shops, two can play at that game."