Similarly, business Web sites may ask visitors to supply information about themselves, particularly when information, services or merchandise are requested, but often simply to be able to better target the company's services to the customer's interests and requirements.

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 Percent price range is the ratio of price range to the lowest price,
coefficient of variation is the ratio of the standard deviation to
the average price.
In general, consumers can be sorted into two groups: those loyal
to a store/brand and those who always search for the best
(lowest) price.
Such consumer heterogeneity allows sellers to price-discriminate.
For example, sellers may offer promotions to attract price-sensitive
consumers, while charging the full price to loyal
customers.
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