No, this isn't another rant about how you should convert to Linux because it's free, although it is free. Free is a four-letter word among those who scoff at the mere mention of Linux. Yes, Linux is free, but that doesn't give it an unfair advantage on the desktop because most computers arrive preloaded with Windows — so to the buyer it appears Windows is also free.
How much did your computer cost? $500? $1,000? $2,000? How much has it cost you since you bought it? The price of a computer is not a one-time expense — it is rather, an ongoing one. How much you pay for your computer over a year's time, or the entire lifetime of the computer, depends greatly on your choice of operating system. Hard to believe? Do the calculations for yourself.
http://www.linuxlinks.com/portal/news/article.php?story=20090218155102164