Team Fortress 2
Counter-Strike: Global Offensive
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http://www.tf2outpost.com/trade/28658813 - b/o: 29 keys (1 month)
http://backpack.tf/profiles/76561198110141382#!/compare/1478736000/1478822400 - sold with 5 keys + sweets for Vivid Plasma Respectless Rubber Glove = 22 keys
http://backpack.tf/profiles/76561198110141382#!/compare/1477872000/1477958400 - sold for Strange Australium Sniper Rifle = 27 keys
Vivid Plasma Respectless Rubber Glove:
http://backpack.tf/profiles/76561198078666051#!/compare/1478908800/1478995200 - sold with 2 keys for Sulphurous Little Buddy = 29 keys
Damn, rip all these tavishes, upvote!
The tavishes are pretty impossible to sell from my experience. Most demo hats are these days tho.