Obviously, raising ticket prices is part of baseball. It's a business and teams don't want to risk losing possible revenue. However, when you're a team that has been absolutely horrible for more than a decade (the Orioles posted a 66-96 record in 2010 and finished 30 games out of first place) and attendance has gone from a franchise-peak average attendance in 1997 (45,816) to the 24th best attendance in the majors (21,662), you shouldn't necessarily be raising ticket prices. Especially when the Orioles won't be putting a winning product on the field again this year (most likely: if it happens it will be a miracle). Management needs to worry about putting people back in the seats at Camden Yards and should find other avenues to increase revenue.
Of course, the Orioles ticket prices are still nowhere close to being the highest in the big leagues. If they were the most expensive, even fewer people would attend games. FlipFlopFlyBall.com offers what they call baseball info graphics and the following one shows each team's ticket prices from the 2009 season. Click on the image to see it full size.