Conservative drop, also need it for my arcana party phantom suggestion.

Sellers:

16 Keys, 3 Weeks unsold http://www.tf2outpost.com/trade/21215570

15 Keys* http://www.tf2outpost.com/trade/21741336

13 Keys(duped)* http://www.tf2outpost.com/trade/21743727

*Both trades are young, but then again all of R+ubi's trades are. Might've been unsold for a while.

Sales:

Sold for an Orbiting Planets Jumper's Jeepcap(14.5 Keys with Overpay)

http://backpack.tf/profiles/76561198056035506?time=1398063600 -> http://backpack.tf/profiles/76561198056035506?time=1399297515

Sold for a Blizzardy Storm Tippler's Tricorne(16 Keys with Overpay)

http://backpack.tf/profiles/76561198080700624?time=1399964400 -> http://backpack.tf/profiles/76561198080700624?time=1400151489

Sold for a Smoking Waxy Wayfinder(16 Keys with Overpay)

http://backpack.tf/profiles/76561198068209351?time=1404370800 -> http://backpack.tf/profiles/76561198068209351?time=1404630000

Quicksold for 13 Keys, Outlier

http://backpack.tf/profiles/76561198067816311?time=1399532400 -> http://backpack.tf/profiles/76561198067816311?time=1399618800

http://www.tf2outpost.com/trade/19699667

Sold for 14 Keys

http://backpack.tf/profiles/76561198040607701?time=1399791600 -> http://backpack.tf/profiles/76561198040607701?time=1399446000

Sold for a Blizzardy Storm Rimmed Raincatcher(15 Keys with Overpay)

http://backpack.tf/profiles/76561198062280321?time=1400396400 -> http://backpack.tf/profiles/76561198062280321?time=1400482800

Sold for 1 Earbud, Outlier

http://backpack.tf/profiles/76561198113487100?time=1401174000 -> http://backpack.tf/profiles/76561198113487100?time=1401260400

Sold for a Massed Flies Safe'n'Sound(17 Keys with Overpay, Outlier)

http://backpack.tf/profiles/76561198045623747?time=1401692400 -> http://backpack.tf/profiles/76561198045623747?time=1401789078

13 Is too low, and while there's 1 unsold at 16 and 1 seller at 15, it still can't be denied that sales happen around there, but any sales above that are too high. 14-16 should do.

Additional Proof/Counter-Proof/Constructive Criticism/Feedback is always appreciated.