https://store.steampowered.com/bundle/232/Valve_Complete_Pack/
Valve Complete Pack on Steam
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https://www.engadget.com/2009-08-15-steam-weekend-all-half-life-66-off-valve-complete-pack-90.html
Steam weekend: All Half-Life 66% off, Valve Complete Pack $90
Aug 15, 2009 - If you've got some holes to fill in your Half-Life collection, or if you've somehow missed the series entirely -- perhaps the result of an interdimensional...
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https://v2ex.com/t/135624
Save 75% on Valve Complete Pack - 2013 on Steam - V2EX
Sep 25, 2014 - Steam - @ibigbug - http://store.steampowered.com/sub/29197/
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