Steam? More like scam!
Take a quick look at Steam’s Holiday Sale. I’m sure that link would be good for long, so here’s the screenshot:

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Nice. I’ve been looking to buy Colonization for a long time, and it’s a 2K game. Let’s go ahead and click the 2K games icon that says, quite clearly:
25-75% OFF ALL TITLES
And we get the list of 2K games:

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So, uh… last time I checked, Steam, 25% off $29.99 would be $22.50. Not the price you have listed, $26.99.
I’ve been wary of the entire Steam concept since the first time I installed it. It didn’t help that the first Steam experience was spending hours downloading Half-Life 2, and then even more hours “activating” it. Things like my Dark Messiah install haven’t exactly increased my confidence. And now I find out that they can’t even get basic pricing right.

Well, the sale’s over, and Steam never answered my support request. Feh.