"I see it time and time again in comparisons of software products where one or more of the options is open source. Someone chimes in with a comment along the lines of: 'Why pay for product X when I can get open source Y for free?'
My response to this is simple: X != Y. Price is a very primitive way to choose software. Differences in price, even when one price is zero, are often insignificant when compared to other factors...."