Sale 1:

Sold for Pro. KS Aussie Flamethrower (24)

No outpost

Seller: http://backpack.tf/profiles/76561198044934255#!/compare/1480723200/1480809600

Buyer: http://backpack.tf/profiles/76561198126226550#!/compare/1480723200/1480809600

X = 24

Sale 2:

Sold for 20 keys

http://www.tf2outpost.com/trade/28690695 - B/O of 40

Seller: http://backpack.tf/profiles/76561198167288288#!/compare/1483574400/1483660800

Buyer: http://backpack.tf/profiles/76561198109756155#!/compare/1483574400/1483660800

X = 20

Sale 3:

Sold for 19 keys + ~1 key in metal/items

No outpost

Seller: http://backpack.tf/profiles/76561198081963512#!/compare/1481241600/1481328000

Buyer: http://backpack.tf/profiles/76561198096802308#!/compare/1481241600/1481328000

X = 20

Sale 4:

Sold for Starstorm Insomnia Wide-Brimmed Bandito (16)

No outpost

Seller: http://backpack.tf/profiles/76561198251960730#!/compare/1482710400/1483574400

Buyer: http://backpack.tf/profiles/76561198164651434#!/compare/1483488000/1483574400

X = 16

Sale 5:

Sold for Strange Spec. KS Field-Tested Thunderbolt Sniper Rifle

http://www.tf2outpost.com/trade/28638165 - B/O of 30

Seller: http://backpack.tf/profiles/76561198102607360#!/compare/1480464000/1480550400

Buyer: http://backpack.tf/profiles/76561198044934255#!/compare/1480464000/1480550400

Can’t get a mini on the thing, non-killstreak ones have sold for ~21 keys worth of SCM funds, though. Should fall into the range.

Sale 6:

Bulk for Screaming Tiger Fubar Fanfare

Seller: http://backpack.tf/profiles/76561198126226550#!/compare/1481846400/1482105600

Buyer: http://backpack.tf/profiles/76561198104064829#!/compare/1482019200/1482105600

Sale 7:

Bulk for Hellish Inferno Zoomin’ Broom

Seller: http://backpack.tf/profiles/76561198096802308#!/compare/1482364800/1482451200

Buyer: http://backpack.tf/profiles/76561198119013032#!/compare/1482364800/1482451200

Sellers:

25 keys:

http://i.imgur.com/WtWgdo2.png - 10 days

http://backpack.tf/u/76561198164651434

http://www.tf2outpost.com/trade/28748496

40 keys:

http://i.imgur.com/mAD9W4p.png

http://backpack.tf/u/76561198043992035

Sales at:

16

20 (2x)

24

http://www.tf2outpost.com/trade/28699628 - Buying for 17 keys, proves 16 to be too low. Excluding 16.

Going with 20-24.