Sale 1:

Sold for 10 keys + 5 ref + 1.5 keys in items

No outpost

Seller: http://backpack.tf/profiles/76561198208062409#!/compare/1461801600/1461888000

Buyer: http://backpack.tf/profiles/76561198187975443#!/compare/1461369600/1461888000

X = 12

Sale 2:

Sold for 11 keys

No outpost

Seller: http://backpack.tf/profiles/76561198103071005#!/compare/1463616000/1463702400

Buyer: http://backpack.tf/profiles/76561198069866419#!/compare/1463616000/1463702400

X = 11

Sale 3:

Sold for Stormy Geisha + 2 keys

http://www.tf2outpost.com/trade/28144265 - B/O of 11

Seller: http://backpack.tf/profiles/76561198258102573#!/compare/1463788800/1463875200

Buyer: http://backpack.tf/profiles/76561198121017846#!/compare/1463788800/1463875200

Geisha is outdated, however, it would have to be 8 keys or less to change the value of this sale.

X = 11 (Capped by B/O)

Sale 4:

Sold for Collector’s Spec. KS Beggar’s Bazooka (7) + 3 keys + 1 key in items

http://www.tf2outpost.com/trade/28225437 - B/O of 10

Seller: http://backpack.tf/profiles/76561198032487192#!/compare/1466726400/1466812800

Buyer: http://backpack.tf/profiles/76561198154208358#!/compare/1466812800/1466899200

X = 10 (Capped by B/O)

Sale 5:

Sold for 10 keys

http://www.tf2outpost.com/trade/28106870 - B/O of 12

Seller: http://backpack.tf/profiles/76561198065132511#!/compare/1461628800/1461888000

Buyer: http://backpack.tf/profiles/76561198104388870#!/compare/1461715200/1461801600

X = 10

Sale 6:

Sold with 1 key in items for Nuts n Bolts Connoisseur’s Cap

Seller: http://backpack.tf/profiles/76561198104388870#!/compare/1461801600/1461888000

Buyer: http://backpack.tf/profiles/76561198208062409#!/compare/1461801600/1461888000

Should be used to update the Cap

Sellers:

10 keys:

http://puu.sh/pLj3c/e9e48020b7.png - young

http://www.tf2outpost.com/trade/28294003 - 1 day

11 keys:

http://www.tf2outpost.com/trade/28280769 - 6 days, unbumped

12 keys:

http://www.tf2outpost.com/trade/28216202 - 4 weeks, poorly bumped

Buyer at 9 keys:

http://www.tf2outpost.com/trade/27934308

Sales at:

10 (2x)

11 (2x)

12

Going with 10-12