Sale 1:

Sold for Orbiting Fire Private Eye (Mini at 17 below)

No outpost

Seller: http://backpack.tf/profiles/76561198079578383#!/compare/1495411200/1495497600

Buyer: http://backpack.tf/profiles/76561198135268403#!/compare/1495324800/1495497600

X = 17

Sale 2:

Sold for Dead Presidents Glengarry Bonnet (Mini at 14.5 below) + 1 key

http://www.tf2outpost.com/trade/28696244 - B/O of 20

Seller: http://backpack.tf/profiles/76561198024766381#!/compare/1495152000/1495324800

Buyer: http://backpack.tf/profiles/76561198079578383#!/compare/1495238400/1495324800

X = 16

Orbiting Fire Private Eye Mini:

http://backpack.tf/suggestion/5938f382c440454f2446aceb

Dead Presidents Glengarry Bonnet Mini:

http://backpack.tf/suggestion/5938f868e3387762054996fe

Sellers:

17 keys:

http://www.tf2outpost.com/trade/29196214 - 2 weeks, was probably lowered during the two weeks

http://backpack.tf/u/76561198135268403

Sales at:

16

17

Going with 16-17.