United Airlines started selling its "Economy Plus" extra-legroom seats for premium prices a few years ago, and now it's expanding the program.

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Offering a fixed 50mm focal length and extra-bright F1.4 aperture, the premium lens is an ideal choice for quality-critical portraiture and low-light shooting.

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We also provide hands-on professional services and dedicated customer support for no extra cost as part of the premium offering for mid to large companies that need help with structured roll-outs, implementing best practices, integration, training, management and measurement, etc.

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And networks can exact a few extra sponsor dollars, up to a 20% premium in a spot-market buy.

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Holding sold the premium product as a way to make a little extra in the thin-margined business of gasoline sales.

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In the case of the oil company, for instance, the cost of land corresponds to the premium (or down-payment) on a call option, and the extra investment needed to start production to its strike price (at which the option is exercised).

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The equity risk premium is usually viewed as the extra return that investors demand for holding equities rather than risk-free bonds.

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Employers--and the Medicare system, which is gearing up to cover 35 million elderly people in 2006--will have to decide whether to pay a big premium to lower cholesterol by a few extra points, or just push most people toward cheap generics.

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