Sale 1:

Sold for 17 keys

http://www.tf2outpost.com/trade/28540085 - B/O of 17

Seller: http://backpack.tf/profiles/76561198021055079#!/compare/1476576000/1476662400

Buyer: http://backpack.tf/profiles/76561198080250900#!/compare/1449475200/1476662400

http://imgur.com/a/mWy90

X = 17

Sale 2: (Dupe)

Sold for 15 keys + 22 ref (1)

http://www.tf2outpost.com/trade/28529467 - B/O of 15?

Seller: http://backpack.tf/profiles/76561198056753441#!/compare/1476230400/1476316800

Buyer: http://backpack.tf/profiles/76561198044844123#!/compare/1476057600/1476316800

I do recall seeing it listed on the classifieds for 16 keys, probably just an error, listing it on outpost for 15

X = 16

Sale 3:

Quicksold for 14 keys

No outpost

Seller: http://backpack.tf/profiles/76561198034312547#!/compare/1475452800/1475539200

Buyer: http://backpack.tf/profiles/76561198093327725#!/compare/1475452800/1475539200

X = 14

Sales at:

17

16

14

No current sellers

Purchased for 14 keys via my buy order

Other sale at 14 quicksold, therefore, excluding 14

Excluding 16 as the milkman was duped. Supports the raise, however.

Going with 17 flat.