Sale 1:

Sold for Strange Pro. KS Shooting Star (13) + 4 keys + 1.33 ref

No outpost

Seller: http://backpack.tf/profiles/76561198069118738#!/compare/1460937600/1461024000

Buyer: http://backpack.tf/profiles/76561198151879911#!/compare/1460937600/1461024000

X = 17

Sale 2:

Sold for 17 keys

http://www.tf2outpost.com/trade/28188549 - B/O of 18

Seller: http://backpack.tf/profiles/76561198092615798#!/compare/1463788800/1463875200

Buyer: http://backpack.tf/profiles/76561198040094440#!/compare/1463788800/1464134400

X = 17

Sale 3:

Sold for 15 keys + Mannrobics

http://www.tf2outpost.com/trade/28246956 - B/O of 18

Seller: http://backpack.tf/profiles/76561198046779505#!/compare/1465516800/1465603200

Buyer: http://backpack.tf/profiles/76561198125666841#!/compare/1465516800/1465603200

X = 17

Sale 4:

Sold for Stormy Milkman

http://www.tf2outpost.com/trade/28181510 - B/O of 17

Seller: http://backpack.tf/profiles/76561198029910109#!/compare/1463702400/1463788800

Buyer: http://backpack.tf/profiles/76561198124615050#!/compare/1463702400/1463788800

X = 16

Sale 5:

Sold for 16 keys

No outpost

Seller: http://backpack.tf/profiles/76561198124615050#!/compare/1463702400/1463788800

Buyer: http://backpack.tf/profiles/76561198092615798#!/compare/1463616000/1463788800

X = 16

Sale 6:

Sold for 16 keys

No outpost

Seller: http://backpack.tf/profiles/76561198048851745#!/compare/1466380800/1466467200

Buyer: http://backpack.tf/profiles/76561198126682291#!/compare/1466294400/1466467200

X = 16

Sale 7:

Quicksold for 14 keys

http://www.tf2outpost.com/trade/28066658 - B/O of 14

Seller: http://backpack.tf/profiles/76561198119332011#!/compare/1460332800/1460419200

Buyer: http://backpack.tf/profiles/76561198002757046#!/compare/1460332800/1460419200

X = 14

Sale 8:

Sold for 14 keys

No outpost

Seller: http://backpack.tf/profiles/76561198111941848#!/compare/1466294400/1466380800

Buyer: http://backpack.tf/profiles/76561198080324797#!/compare/1466294400/1466380800

X = 14

Sale 9:

Sold for 13 keys + <0.5 keys in ref

http://www.tf2outpost.com/trade/28066596 - B/O of 15

Seller: http://backpack.tf/profiles/76561198047753332#!/compare/1460419200/1461801600

Buyer: http://backpack.tf/profiles/76561198119332011#!/compare/1460332800/1460419200

X = 13

Sale 10:

Sold for Kill-a-Watt Gentleman’s Gatsby

Seller: http://backpack.tf/profiles/76561198152667546#!/compare/1463356800/1463616000

Buyer: http://backpack.tf/profiles/76561198107039369#!/compare/1463443200/1463529600

Not many sales on the Gatsby, would rather use this sale to update it

Sale 11:

Sold with Shotgun Skin for Dead Presidents Engi Cap

Seller: http://backpack.tf/profiles/76561198161625387#!/compare/1465603200/1465689600

Buyer: http://backpack.tf/profiles/76561198203537236#!/compare/1465603200/1465689600

Should be used to update the Engi Cap

Sale 12:

Sold for Power Surge Ol’ Geezer

Seller: http://backpack.tf/profiles/76561198125791160#!/compare/1466726400/1466812800

Buyer: http://backpack.tf/profiles/76561198170735867#!/compare/1466553600/1466812800

Would prefer to update the Geezer with this sale

Sale 13:

Sold with a key for Cloud 9 Prancer’s Pride

Seller: http://backpack.tf/profiles/76561198064709487#!/compare/1462406400/1462492800

Buyer: http://backpack.tf/profiles/76561198048851745#!/compare/1462320000/1462406400

Should be used to update the Prancer’s Pride

Sale 14:

Sold for Miami Nights Brim Fulla Bullets

Seller: http://backpack.tf/profiles/76561198076170767#!/compare/1460160000/1460246400

Buyer: http://backpack.tf/profiles/76561198047753332#!/compare/1459641600/1460246400

The Brim lacks proper, usable sales. Would be best to update the Brim with this sale.

Sale 15:

Sold with Buds for Steaming Pencil Pusher

Seller: http://backpack.tf/profiles/76561198126682291#!/compare/1466467200/1466553600

Buyer: http://backpack.tf/profiles/76561198011321852#!/compare/1466380800/1466467200

Should be used to update the pencil

Sellers:

17 keys:

http://www.tf2outpost.com/trade/28271421 – 1 week

19 keys:

http://puu.sh/pKhey/7781bad17f.png - 1 week

Sales at:

17 (3x)

16 (3x)

14 (2x)

13

16-17 is a far more common trading point, and the sales at 14 occurred pretty quickly. Excluding 14

Going with 16-17