ImpulseDriven.com is offering Galactic Civilizations Ultimate Edition for 99cents with a coupon code. ImpulseDriven is the same company that offered Red Faction for so cheap a few weeks ago. Again, if you use the coupon code, you won't be able to use paypal. You'll have to use your credit/debit card. Not sure if this is U.S. only or if it's available to anyone.
Galactic Civilizations is an RTS/Sim game in outer space. Looks a little outdated, but for 99 cents I figure it's worth a shot. The link takes you to the promotion. If you click anywhere on the page, it will take you to your card with the promotional code already entered for you. Simply click on the game's name in your card to view the product page again without the click restriction.
http://www.stardock.com/media/mailers/galactic_civilizations_i.htm