Due to Steam Autumn sales, you can now buy Fallout: New Vegas and all its add-ons for 75% off their normal price - the game itself costs $/€ 4.99, Dead Money, Honest Hearts, Old World Blues and Lonesome Road cost $/€ 2.49, and Courier's Stash and Gun Runners' Arsenal come at $/€ 0.49 and $/€ 0.99.

I pretty much copy and pasted this from the new vault site, it was a news post Ausir had put up so i felt it needed to go here as well. that is the link and source