I wonder how many times it can be pointed out that it is cheaper on PC compared to consoles in loads of countries other than US. Is it because it is hard to rant when there is a sensible answer?
There are usually preorder "specials" to be found as well on various sites more often than not (I picked up TW2 on D2D for instance for $35 prior to release). I also preorded DA2 last October when it was going for $39.99...and a month later they raised the base price to $49.99 for everyone else.
300 - 500 hour playthroughs are not uncommon and Skyrim has a much higher replay value than those games.
That's also far from average. You can't use an extreme example as something baseline. Sitting in a tavern "RPing" in a way that doesn't even have any effect on the game at all does not count towards "game time". I could turn on any game, go take a shower and somehow make the claim that the time spent in the shower is time spent with the game as well. You also have absolutely no idea whether or not Skyrim is going to have more replay "value" yet either. It seems to be about as much as Oblivion as long as you're able to make a character that's not a generalist build--which most end up being whether or not it's intentional anyway.
Accordingly, I estimate 5 - 10 playthroughs of 300-500 hours each, spread out over a period of several years.
Yeah, you're definitely nowhere near the average person when it comes to Bethesda games. They aren't
that exciting.