Re-suggesting as per Foamy’s comment, as well as new sales/sellers:

http://backpack.tf/suggestion/58b16012c4404578274f548b

Sale 1:

Sold for Death at Dusk Tippler’s Tricorne (Mini at 32 below) + Terror-Watt Voodoo JuJu (Mini at 17 below) + 8 keys + ~9 keys in items

http://www.tf2outpost.com/trade/28705582 - B/O of 65

Seller: http://backpack.tf/profiles/76561198117646079#!/compare/1484265600/1484352000

Buyer: http://backpack.tf/profiles/76561198170239554#!/compare/1484265600/1484352000

X = 65 (Capped by B/O)

Sale 2:

Sold for Bubbling Front Runner (17.5) + Blizzardy Storm Dead Cone (12.5) + Neutron Star Wing Mann (11.5) + 8 keys

http://www.tf2outpost.com/trade/28792211 - B/O of 45

Seller: http://backpack.tf/profiles/76561198056144015#!/compare/1487635200/1487721600

Buyer: http://backpack.tf/profiles/76561198078560380#!/compare/1487635200/1487721600

X = 45 (Capped by B/O)

Sale 3:

Quicksold for 41 keys

http://www.tf2outpost.com/trade/28803638 - B/O of 41

Seller: http://backpack.tf/profiles/76561198309942981#!/compare/1488067200/1488153600

Buyer: http://backpack.tf/profiles/76561198278474165#!/compare/1488067200/1488153600

X = 41

Sale 4:

Sold for 38 keys in ~3 days

http://www.tf2outpost.com/trade/28795411 - B/O of 50

Seller: http://backpack.tf/profiles/76561198309942981#!/compare/1487894400/1487980800

Buyer: http://backpack.tf/profiles/76561198078560380#!/compare/1487808000/1487980800

X = 38

Sale 5:

Quicksold for 36 keys

http://www.tf2outpost.com/trade/28795411 - B/O of 50

Seller: http://backpack.tf/profiles/76561198078560380#!/compare/1488067200/1488153600

Buyer: http://backpack.tf/profiles/76561198179201573#!/compare/1488067200/1488153600

X = 36

Death at Dusk Tricorne Mini: – Credit to Alberny

Sold for 32 keys

http://www.tf2outpost.com/trade/28707605 - B/O of 32

Seller: http://backpack.tf/profiles/76561198080179568#!/compare/1484006400/1484092800 (Near ID: 5432396209)

Buyer: http://backpack.tf/profiles/76561198155294524#!/compare/1484006400/1484092800

X = 32

Terror-Watt Voodoo JuJu Mini:

http://backpack.tf/suggestion/58b15d9fe33877636b33e132

Sellers:

40 keys:

http://i.imgur.com/1VKKyTo.png

http://backpack.tf/u/76561198179201573

48 keys:

http://i.imgur.com/lDJRvgS.png - Has been bouncing between 48 and 51 for a fair bit, has owned the hat since January 10th (~1.5 months)

http://backpack.tf/u/76561198309246958

Sales at:

36

38

41

45

65

41 and below all quicksold. Excluding 41 and below.

65 is an outlier, due to the large amount of sales for lower, and the current sellers.

Seller at 40 is too young to include, and the hat has already quicksold for 41 keys.

Going with 45 flat.