Green Man Gaming offers Steam downloads of Half-Life Complete for Windows for $9.99. Coupon code "ENCORE-IFDSAL-E15OFF" drops it to $8.50. At $0.85 per game, the lowest price we could find by $31, although we saw it for a buck less in December. It includes all ten Half-Life games including Half-Life, Half-Life 2, Half-Life: Blue Shift, and Team Fortress Classic.