Sale 1:

Sold for Aces Sultan (11.5) + 5 keys

http://www.tf2outpost.com/trade/28231903 - Deleted B/O

Seller: http://backpack.tf/profiles/76561198002186909#!/compare/1465603200/1465689600

Buyer: http://backpack.tf/profiles/76561198058439292#!/compare/1465603200/1465689600

X = 17 (Rounded from 16.5)

Sale 2:

Sold for Terror-Watt Larrikin Robin (17.5) + 2 keys

http://www.tf2outpost.com/trade/28252040 - B/O of 17

Seller: http://backpack.tf/profiles/76561198058439292#!/compare/1465689600/1465776000

Buyer: http://backpack.tf/profiles/76561198081875069#!/compare/1465689600/1465776000

X = 17 (Capped by B/O)

Sale 3:

Sold for 16 keys?

http://www.tf2outpost.com/trade/28252372 - B/O of 16

Seller: http://backpack.tf/profiles/76561198081875069#!/compare/1466035200/1466121600

Buyer: http://backpack.tf/profiles/76561198066841203#!/compare/1464652800/1466121600

Key histories don’t match, probably because the buyer’s backpack hadn’t been scanned in weeks before the purchase. I don’t see what else it could’ve sold for, though.

X = 16

No current sellers

Sales at:

16

17 (2x)

Going with 16-17