Sellers:

http://www.tf2outpost.com/trade/29208814 - b/o: 10 keys (16 hours)

http://www.tf2outpost.com/trade/28861909 - b/o: 11 keys (1 month)

http://www.tf2outpost.com/trade/29200512 - b/o: 11 keys (6 days)

Sold:

http://backpack.tf/profiles/76561198156252082#!/compare/1494115200/1495497600 - ?

http://backpack.tf/profiles/76561198304138933#!/compare/1491350400/1491436800

http://backpack.tf/profiles/76561198082924820#!/compare/1491177600/1491436800 - ?

http://backpack.tf/profiles/76561198199710042#!/compare/1490659200/1490832000 - ?

http://www.tf2outpost.com/trade/28819998

http://backpack.tf/profiles/76561198098053988#!/compare/1490054400/1490140800 - sold with 3 keys + sweets (1) for Starstorm Insomnia Cranial Carcharodon (14) = 10 keys

http://backpack.tf/profiles/76561198090520320#!/compare/1494633600/1494720000

http://backpack.tf/profiles/76561198034270225#!/compare/1494374400/1494720000 - ?

http://www.tf2outpost.com/trade/28895085

http://backpack.tf/profiles/76561197964171516#!/compare/1494201600/1494288000 - sold for items (9) = 9 keys (low)

http://backpack.tf/profiles/76561198168128019#!/compare/1496016000/1496275200 - sold for 9 keys + 12 ref (9) (quicksold)

http://backpack.tf/profiles/76561198173257210#!/compare/1496188800/1496275200 - bulk

http://backpack.tf/profiles/76561198164651434#!/compare/1496275200/1496361600 - ?

http://backpack.tf/profiles/76561198271428863#!/compare/1495152000/1495238400 - sold for Orbiting Fire Rimmed Raincatcher (11) = 11 keys

http://backpack.tf/profiles/76561198158727485#!/compare/1495065600/1495152000 - ?

http://www.tf2outpost.com/trade/29186792

http://backpack.tf/profiles/76561198271428863#!/compare/1494979200/1495152000 - sold for Orbiting Planets Elf Esteem (11) + 1 key = 12 keys

http://backpack.tf/profiles/76561198210864032#!/compare/1494979200/1495065600 - sold for Steaming Steel Shako (11) + sweets (1) = 12 keys

http://www.tf2outpost.com/trade/29182005

http://backpack.tf/profiles/76561198259518757#!/compare/1494892800/1494979200 - sold for 9.5 keys (10)

Mini’s:

Steaming Steel Shako:

http://backpack.tf/suggestion/5931417d0e2cad5bd33b6605 = 11 keys

Conclusion:

sales at 9, 9, 10, 10, 11, 12, 12

taking 10-12 keys