Steam - Valve Games & DLC (PC Digital Download): Half-Life or Half-Life 2 $1.99, Portal 2 $1.99 & More

-- Half-Life $1.99
-- -- Half-Life: Opposing Force $1.24
-- -- Half-Life: Blue Shift $1.24
-- Half-Life 1 Anthology $3.13
includes Half-Life + Half-Life: Opposing Force + Half-Life: Blue Shift + Team Fortress Classic
-- Half-Life 2 $1.99
includes Half-Life 2 + Half-Life 2: Episode One + Half-Life 2: Episode Two
-- The Orange Box $3.99
includes Half-Life 2 + Half-Life 2: Episode One + Half-Life 2: Episode Two + Portal + Team Fortress 2 + Half-Life 2: Lost Coast (tech demo)
-- Black Mesa $4.99
-- Portal $1.99
-- Portal 2 $1.99