71.   After a committee of owners complained to Mayor Willie Brown, the Airport Commission voted to reimburse the restaurateurs for the extra costs.

72.   Advance reservations are required for coupon use, but changes in the schedule may be made, subject to availability, at no extra cost.

73.   All of its revenues come from royalties on its technology, which boosts the performance of computer memory chips at little extra cost.

74.   Breakfast and lunch are available at extra cost.

75.   Businesses and labor unions have long complained about such cost-shifting because they pay the extra costs.

76.   But buyers of sport utility vehicles are often so prosperous that they may not notice the extra cost.

77.   But Allstate found that part of the extra cost is offset by collision insurance costs that have turned out to be even lower than expected for sport utility vehicles.

78.   But Dole has not been able to make his tax-cutting, budget-balancing package add up even without factoring in the extra Star Wars cost.

79.   But Harvard Vanguard, hoping to compete with these rivals, is promising to give patients more freedom without extra costs.

80.   But most businesses say they will be forced to absorb the extra costs.