One such practice, Mr. Green said, was not posting prices, which is required by city ordinance.

Ticket Outlet has posted prices for inaugural tickets on its Internet site, www.inauguralevents.com.

At one point in August, independent marketers posted prices nearly 4 cents a gallon higher, on average, than the major brands.

Most consumer goods have posted prices that exclude tax; taxes are added based on a percentage of the purchase price.

IF a brokerage house is posting prices at which it will buy or sell a stock, should it know something about the company's financial condition?

In some regions, service stations are posting prices above $3 a gallon, and most analysts expect further increases in coming months.

Amazon.com experimented with posting different prices to individual customers, depending on their past buying patterns.

Few have posted prices or menus; some fly the flag of the country they hail from.

Market makers in Nasdaq securities trade with the public, posting prices at which they are willing to buy or sell securities.

Many other companies with favorable earnings reports also posted higher prices.