Much of the real cost of a home printer is the ink. In fact, refill cartridges can end up costing more than 500% of the cost of the printer itself over the life of the machine, according to a 2008 study by the American Consumer Institute, a consumer-protection group.

No wonder so many of our readers now refill cartridges at office-supply stores or print out only essential documents. And they're not alone. Hewlett-Packard executives recently acknowledged that fewer Americans are printing at home.

Ink is so pricey that some printer manufacturers discount their machines in order to sell more of the models with the highest ink expenses. The American Consumer Institute Center for Citizen Research found that consumers could save $6 billion a year if they opted for printers with lower ink costs rather than those with the lowest sticker prices. The center has a calculator on its site to help consumers estimate the cost of owning a specific printer.

• Bing Shopping: Find a home printer that suits you

From MSN Money's message boards: "These prices always make me crazy," "TobyRadloff" wrote. "There's always the option of having your ink cartridges refilled. Retailers such as Walgreens and OfficeMax refill printer cartridges . . . (are) much cheaper than buying new. There are also do-it-yourself kits for refilling ink cartridges, but those can be messy."

Continued: Drinks at restaurants

It's understandable, given the performance of most investors' portfolios last year, that readers would be angry about paying money-management fees on their retirement savings. The average 401k balance shrank 27% last year, according to Fidelity Investments. In retrospect, many investors were undoubtedly thinking they would have done better had they tucked their money under a mattress.

• Bing: Tips on investing in 401k's

Management fees are typically less than 1% of the assets in the 401k. If you're paying more, make sure it's for good reason.

From MSN Money's message boards: "I hate paying 401k management fees," wrote "Deregulate This." "They steal the paltry gains (if there are any) and they still charge . . . even when they lose a ton of money."

Continued: Airline baggage fees

"Take me out to the ballgame. Take me out to the crowd. Buy me some . . ."

Stop right there, readers say. Many maintain they will never buy ballpark food because of the high prices.

• Bing: What's in a hot dog?

The prices have risen steadily in recent years. On average, baseball fans will pay $3.70 for a hot dog and an additional $3.44 for a soft drink this year, according to ISM Media's annual fan cost index. In fact, despite the recession, fans will pay an average of 3.2% more on ticket and concession prices this year than in 2008. (New York Yankees fans will pay a whopping 49.4% more, due largely to increased ticket prices. That increase is, by far, the highest in the sport.)

From MSN Money's message boards: "Baseball park snack prices: Come on, people, quit ripping off the public like that," wrote "Spotmefive."

Continued: What do you think?