It depends what kind of game it is. A lot of PC games are simpler than console games, thus they're cheaper. I don't play PC versions of games that have console counterparts, so perhaps that market is different. The games I have for the PC are made only for the PC, like the Age of Empires series and the Tycoon games.

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Anything good in life is either illegal, immoral, or fattening. - Murphy's Law