Sale 1:

Sold for Isotope Minimal Wear Corsair Scattergun (39.5)

No outpost

Seller: https://backpack.tf/profiles/76561198034420959#!/compare/1495324800/1495497600

Buyer: https://backpack.tf/profiles/76561198070593964#!/compare/1495411200/1495497600

X = 40

Scattergun suggestion: https://backpack.tf/suggestion/58e24242e338773e503bb8d6 (to make it more easily accessible)

Sale 2:

Sold for Orbiting Fire Das Gutenkutteharen (33) + 2 keys

http://www.tf2outpost.com/trade/29186451 - No B/O (lol 10 key offer)

Seller: https://backpack.tf/profiles/76561198045948799#!/compare/1495152000/1495238400

Buyer: https://backpack.tf/profiles/76561198112846530#!/compare/1495152000/1495238400

X = 35

Sale 3:

Sold for Aces High Brainiac Hairpiece (Mini at 28 below) + ~1 key in taunts

http://www.tf2outpost.com/trade/29202992 - B/O of 40

Seller: https://backpack.tf/profiles/76561198119461404#!/compare/1495929600/1496016000

Buyer: https://backpack.tf/profiles/76561198018719204#!/compare/1495929600/1496016000

X = 29

Sale 4:

Bulk for Death at Dusk Slick Cut

Seller: https://backpack.tf/profiles/76561198070593964#!/compare/1495843200/1495929600

Buyer: https://backpack.tf/profiles/76561198119461404#!/compare/1495843200/1495929600

Sale 5:

Bulk for a thing or two

Seller: https://backpack.tf/profiles/76561198018719204#!/compare/1495929600/1496016000

Buyer: https://backpack.tf/profiles/76561198070443280#!/compare/1495929600/1496016000

Aces Brainiac Mini:

https://backpack.tf/suggestion/592ba988e338773213473c96

Sellers:

90 keys:

http://www.tf2outpost.com/trade/29203725

https://backpack.tf/u/76561198070443280

Sales at:

29

35

40

Gonna round 29 to 30, to make a neat range.

Going with 30-40.