Deluxe editions?

If a deluxe edition is available for your favourite video game would you consider buying it? Deluxe editions usually include more of the game's story or more features which you will be able to gain access if you buy that edition. Have you ever purchased video games which are deluxe editions?

Personally, I have never bought any deluxe/special editions. 99% of the time they are very expensive and don't offer that much for the price. However, if a good deal appears I might grab one.