Sale 1:

Sold with Pink B.M.O.C (>3.5) + ~2 keys in keys/metal for Miami Nights Modest Metal (28)

http://www.tf2outpost.com/trade/28901100 - No B/O

Seller: http://backpack.tf/profiles/76561198066343630#!/compare/1493596800/1494288000

Buyer: http://backpack.tf/profiles/76561198091343842#!/compare/1493510400/1493596800

X = 22

Sale 2:

Sold for Terror-Watt Industrial Festivizer (22)

http://www.tf2outpost.com/trade/28907764 - B/O of 22, seller confirms sale (legend)

Seller: http://backpack.tf/profiles/76561198142320206#!/compare/1493856000/1494028800

Buyer: http://backpack.tf/profiles/76561198246680606#!/compare/1493942400/1494028800

X = 22

Sale 3:

Sold for Australium Wrench (19) in less than a day

http://www.tf2outpost.com/trade/28903040 - B/O of 20

Seller: http://backpack.tf/profiles/76561198093152734#!/compare/1493510400/1493596800

Buyer: http://backpack.tf/profiles/76561198142320206#!/compare/1493510400/1493596800

X = 19

Sale 4:

Sold for Aces High Backwards Ballcap

No outpost

Seller: http://backpack.tf/profiles/76561198091343842#!/compare/1493510400/1493596800

Buyer: http://backpack.tf/profiles/76561198328284788#!/compare/1493510400/1493596800

Can be used to update the Ballcap

Sellers:

25 keys:

http://i.imgur.com/O2bEWNL.png - 1 day

http://backpack.tf/u/76561198125791160

Sales at:

22 (2x)

19

Excluding 19 due to how quickly it sold.

Going with 22 flat.