Sold:

https://marketplace.tf/items/344;5;u56 - sold for $30 = 14 keys

http://www.tf2outpost.com/trade/28909645

http://backpack.tf/profiles/76561198148414821#!/compare/1493942400/1494028800

http://backpack.tf/profiles/76561198125966582#!/compare/1494028800/1494115200 - sold with sweets (1) for Orbiting Fire Noble Amassment of Hats (20) = 16 keys b/o

http://backpack.tf/profiles/76561198011321852#!/compare/1493683200/1493769600 - sold for Steaming Brain-Warming Wear (13) + sweets (3) = 16 keys

http://www.tf2outpost.com/trade/28869397

http://backpack.tf/profiles/76561198113244106#!/compare/1491955200/1492041600 - sold for Steaming Desert Marauder (14) = 14 keys

http://backpack.tf/profiles/76561198128297368#!/compare/1494892800/1494979200 - sold for Strange Professional Killstreak Diamond Botkiller Rocket Launcher Mk.I (14) = 14 keys

http://www.tf2outpost.com/trade/29181704

http://backpack.tf/profiles/76561198088456061#!/compare/1494806400/1494892800 - sold for Circling Peace Sign Respectless Rubber Glove (12) + 1 key + metal (1) = 14 keys

http://backpack.tf/profiles/76561198149471232#!/compare/1494720000/1494806400 - sold for Kill-a-Watt L'Inspecteur (14) = 14 keys

Mini’s:

Circling Peace Sign Respectless Rubber Glove:

http://backpack.tf/suggestion/5931472a0e2cad5be05c815a = 12 keys

Conclusion:

sales at 14, 14, 14, 14, 14, 16, 16

taking 14-16 keys