Wolf Pack
Include: Return to Castle Wolfenstein, Spear of Destiny, Wolfenstein 3D
.
The Hitman Collection
Include: Hitman 2: Silent Assassin, Hitman: Blood Money, Hitman: Codename 47
.
Serious Sam Complete Pack (http://store.steampowered.com/sub/17410/)
Include: Serious Sam HD: The First Encounter, Serious Sam HD: The Second Encounter - Demo, Serious Sam HD: The Second Encounter, Serious Sam Classic: The First Encounter, Serious Sam Classic: The Second Encounter, Serious Sam 3: BFE, Serious Sam Double D, Serious Sam 3: BFE Bonus Pack, Serious Sam: The Random Encounter, Serious Sam 2
.
THQ Collection
Include: Company of Heroes, Company of Heroes: Opposing Fronts, Darksiders II, Darksiders™, Dawn of War II: Retribution – The Last Standalone, Metro 2033, MX vs ATV Reflex, Red Faction, Red Faction II, Red Faction®: Armageddon™, Saints Row 2, Saints Row: The Third, Supreme Commander, Supreme Commander: Forged Alliance, Titan Quest, Titan Quest - Immortal Throne, Warhammer 40,000: Dawn of War II: Retribution, Warhammer 40,000: Space Marine, Warhammer® 40,000™: Dawn of War® II, Warhammer® 40,000: Dawn of War® II Chaos Rising
.
I'm not interested in cd-keys and Origin stuff. I accept TF2, Dota 2 keys and metal (6 ref as 1 key).
Games:
Payday 2 - 10 keys (giftable only, you go first unless you have really a lot of rep)
Arma: Cold War Assault - 1.5 keys
Borderlands 2 ROW - 10 keys
Counter-Strike Complete (incl. CS:GO) - 8 keys
Death Rally - 1.5 keys
Don't Starve - 4 keys
Half-Life 2 - 2 keys
Just Cause Collection - 3 keys
Killing Floor - 3 keys
Killing Floor Bundle - Oct 2012 (13 items) - 4 keys
Left 4 Dead 2 - 4 keys
Magicka - 2 keys
Medieval II: Total War™ - 3 keys
Perimeter 2: New Earth - 2 keys
Portal 2 - 3 keys
Postal 2 Complete - 3 keys
Sid Meier's Civilization V - Gods and Kings - 4 keys
Serious Sam 2 - 1 key
The Ship - 2 Pack Gift - 2 keys
Toki Tori - 1 key
Trine 2: Complete Story - 3 keys
Tropico 4 Collector's Bundle - 4 keys
Valve Complete Pack - 19 keys
Selling full trading card sets - all cards of a game needed to craft a badge.
Available sets:
Ace of Spades - 1 key
Awesomenauts - 1 key + 2 ref
Borderlands 2 - 2 keys
Counter-Strike: Global Offensive - 1 key + 2 ref
Defense Grid: The Awakening - 1 key + 2 ref
Don't Starve - 1 key
Dota 2 - 2 keys
Garry's mod - 1 key
Hotline Miami - 1 key + 1 ref
Kerbal Space Program - 1 key + 1 ref
Left 4 Dead 2 - 1 key
Mount & Blade - 1 key
Mount & Blade: Warband - 1 key
Orcs Must Die! 2 - 1 key
Portal 2 - 1 key + 1 ref
Reus - 1 key
Scribblenauts Unlimited - 1 key
Sid Meier's Civilization V - 1 key
Steam Summer Getaway - 1 key + 1 ref
Surgeon Simulator 2013 - 1 key
Team Fortress 2 - 1 key
The Elder Scrolls V: Skyrim - 2 keys
I could get other sets too if you're interested.