Sellers:

http://imgur.com/a/c0532 - b/o: 400 keys

http://backpack.tf/item/5623785514 - 2 hours

http://backpack.tf/item/4989636311 - 21 days

http://backpack.tf/item/5131502250 - http://www.tf2outpost.com/trade/28858040 - 26 days

http://backpack.tf/item/3353301929 - http://www.tf2outpost.com/trade/28817772 - 1 month

Sales:

http://www.tf2outpost.com/trade/28801245

http://backpack.tf/profiles/76561198113365853#!/compare/1488844800/1489017600 - sold with Strange Specialized Killstreak Australium Grenade Launcher + Strange Specialized Killstreak Australium Stickybomb Launcher + sweets for duped Purple Energy Modest Pile of Hat + Blizzardy Storm Hot Dogger + Miami Nights Ze Goggles + Sunbeams Towering Titanium Pillar of Hats + Tesla Coil Wide-Brimmed Bandito = 268 keys

http://backpack.tf/profiles/76561198113365853#!/compare/1487289600/1487548800 - sold with 26 keys for Purple Energy Merc's Mohawk = used to price the p.e hawk

http://www.tf2outpost.com/trade/28833233

http://backpack.tf/profiles/76561197967159739#!/compare/1491955200/1492041600

http://imgur.com/a/Zq9kh - sold for Burning Flames Modest Pile of Hat = 300 keys b/o

Credits to yahiamice and נσяgє

Mini's:

duped Purple Energy Modest Pile of Hat:

http://www.tf2outpost.com/trade/28833571

http://backpack.tf/profiles/76561198004274048#!/compare/1489536000/1489708800 - sold for 110 keys (quicksold)

http://www.tf2outpost.com/trade/28839780

http://backpack.tf/profiles/76561198016913175#!/compare/1489881600/1489968000 - sold for Nether Trail Prehistoric Pullover = 160 keys b/o

Blizzardy Storm Hot Dogger:

http://backpack.tf/profiles/76561198134817131#!/compare/1486339200/1486425600 - sold for Starstorm Insomnia Nasty Norsemann = 25 keys

Sunbeams Towering Titanium Pillar of Hats:

http://backpack.tf/profiles/76561198219288407#!/compare/1489190400/1489363200 - sold for Kill-a-Watt Crone's Dome = 85 keys

http://imgur.com/a/TF7As - b/o: 70 keys

http://backpack.tf/item/5065027936 - 11 days

taking 70-85 keys