Sale 1: (Dupe)

Sold for Smoking Ketche (Mini at 10 below)+ 3 keys + ~2 keys in items

No outpost

Seller: http://backpack.tf/profiles/76561198059562031#!/compare/1475798400/1475884800

Buyer: http://backpack.tf/profiles/76561198088469075#!/compare/1475798400/1475884800

X = 15

Sale 2: (Dupe)

Sold for 13 keys

No outpost

Seller: http://backpack.tf/profiles/76561198090956917#!/compare/1478822400/1478908800

Buyer: http://backpack.tf/profiles/76561198033198046#!/compare/1478822400/1479772800

X = 13

Sale 3: (Dupe)

Sold for Bubbling Sultan’s Ceremonial (9.5) + 3 keys in taunts

http://www.tf2outpost.com/trade/28517274 - Offers

Seller: http://backpack.tf/profiles/76561198135982067#!/compare/1475280000/1475625600

Buyer: http://backpack.tf/profiles/76561198059562031#!/compare/1475366400/1475452800

X = 13

Sale 4: (Dupe)

Sold for 12 keys

No outpost

Seller: http://backpack.tf/profiles/76561198056753441#!/compare/1476316800/1476403200

Buyer: http://backpack.tf/profiles/76561198015121976#!/compare/1475798400/1476403200

X = 12

Sale 5: (Dupe)

Sold for Peace Sign Heavy Duty Rag (Mini at 12 below)

http://www.tf2outpost.com/trade/28563180 - B/O of 13

Seller: http://backpack.tf/profiles/76561198018528305#!/compare/1480550400/1480636800

Buyer: http://backpack.tf/profiles/76561198173092790#!/compare/1480550400/1480636800

X = 12

Sale 6: (Dupe)

Sold for Stormy Bombing Run (12) + ~1 key in painted junk/metal

http://www.tf2outpost.com/trade/28556489 - B/O of 10 keys + 8 ref

Seller: http://backpack.tf/profiles/76561198010679196#!/compare/1477180800/1477267200

Buyer: http://backpack.tf/profiles/76561198131683191#!/compare/1477180800/1477267200

X = 10 (Capped by B/O, rounded)

Sale 7:

Quicksold for 10 keys

No outpost

Seller: http://backpack.tf/profiles/76561198064423172#!/compare/1480204800/1480291200

Buyer: http://backpack.tf/profiles/76561198133041085#!/compare/1480204800/1480291200

X = 10

Sale 8: (Dupe)

Sold for Smoking Tin Topi

Seller: http://backpack.tf/profiles/76561198131683191#!/compare/1477353600/1477440000

Buyer: http://backpack.tf/profiles/76561198075581853#!/compare/1477353600/1477440000

Topi is 2 years outdated, would probably be better to update it with this sale

Smoking Ketche Mini: (Credit to Blaze.xTH3RM4Lx)

http://backpack.tf/suggestion/5828c69d8667471e351e6f06

Peace Sign Rag Mini:

http://backpack.tf/suggestion/58459aaec44045192124b0db

Sellers:

12 keys:

http://i.imgur.com/TLR8kdR.png - 29 days

http://backpack.tf/u/76561198066195760

http://i.imgur.com/7Bzphyn.png

http://www.tf2outpost.com/trade/28633471 - 1 week

http://backpack.tf/u/76561198133041085

Sales at:

10

12 (2x)

13 (2x)

15

10 appears to be a quicksell price. Excluding 10

15 looks like a bit of an outlier, with the majority of sales and sellers being in the 12-13 range. Excluding 15.

Going with 12-13