Steam are currently having a sale on all Eidos and Square Enix games, for the next week, with new deals released each day.
Today, it's the Hitman and Deus Ex games on sale. Each game is £2.99 instead of £5.99, but there are also bundles available at a larger discount.
The Hitman Collection (Hitman 2, Hitman: Codename 47, Hitman Blood Money) is £5.59
The Deus Ex and Hitman Pack (Hitman 2, Hitman: Codename 47, Hitman Blood Money, Deus Ex GOTY edition and Deus Ex: Invisible War) is £10.19
Hot price for some highly rated games, on PC through download.