1 of 3 in existence!

Sale 1: (invalid sale)

Involved in a bulk deal for It's A Secret To Everybody Crone's Dome

http://www.tf2outpost.com/trade/25949101

Backpack of buyer:

http://backpack.tf/profiles/76561198056189244?time=1432278000 (May 22nd)

http://backpack.tf/profiles/76561198056189244?time=1432364400 (May 23rd)

Backpack of seller:

http://backpack.tf/profiles/76561198025034874?time=1432278000 (May 22nd)

http://backpack.tf/profiles/76561198025034874?time=1432364400 (May 23rd)

Sale 2: (invalid sale)

Involved in yet another bulk deal for It's A Secret To Everybody Tough Stuff Muffs

http://www.tf2outpost.com/trade/26061760

Backpack of buyer:

http://backpack.tf/profiles/76561198064745482?time=1432969200 (May 30th)

http://backpack.tf/profiles/76561198064745482?time=1433055600 (May 31st)

Backpack of seller:

http://backpack.tf/profiles/76561198056189244?time=1432969200 (May 30th)

http://backpack.tf/profiles/76561198056189244?time=1433055600 (May 31st)

Sale 3:

Sold for Demonflame Buckaroos Hat (36*0.9) + Strange Festive Minigun (9*0.9) = 32.4 + 8.1 = 40.5 (rounding to 40 keys)

http://www.tf2outpost.com/trade/26093247

Backpack of buyer:

http://backpack.tf/profiles/76561198060927833?time=1432969200 (May 30th)

http://backpack.tf/profiles/76561198060927833?time=1433142000 (June 1st)

Backpack of seller:

http://backpack.tf/profiles/76561198064745482?time=1433055600 (May 31st)

http://backpack.tf/profiles/76561198064745482?time=1433142000 (June 1st)

Notes:

No other recent sales apart from the 3 listed above. Rounding Sale 3 to 40 keys just to make it a nice number.

http://www.tf2outpost.com/trade/26345703 - Received an offer of 30 keys + The Ooze Trencher's Topper

http://www.tf2outpost.com/trade/26093247 - B/O of 45 keys

Conclusion:

One valid sale at 40 keys. Taking a final flat price 40 keys.

Feel free to support/counter my suggestion!