9 month old price!

Sale 1: (invalid sale, using it to price the RPS taunt)

Sold for Holy Grail RPS Taunt + Sweets

http://www.tf2outpost.com/trade/25842871

http://i.imgur.com/6P2F1Nl.png

Sale 2:

Sold for Death at Dusk Killer's Kabuto (156*0.9) = 140.4 (rounding to 140 keys)

http://www.tf2outpost.com/trade/25779983

http://i.imgur.com/elgpbHr.png

Sale 3: (invalid sale, unpriced hats)

Sold for 2 Circling Heart Havenaplanes

http://www.tf2outpost.com/trade/25719300

http://i.imgur.com/l7zatmB.png

Sale 4:

Sold for Sunbeams Private Eye (49.5*0.9) + Burning Engineer's Cap (63*0.9) + Nuts Soldier's Stash* (30*0.9) = 44.55 + 56.7 + 27 = 128.25 (rounding to 130 keys)

http://www.tf2outpost.com/trade/25519669

http://i.imgur.com/s5SX2nG.png

Sale 5: (invalid sale)

Involved in a complex trade

http://www.tf2outpost.com/trade/25710472

http://i.imgur.com/lSXROi1.png

Sale 6: (support-proof)

Sold for Ghosts Hallmark + Arcana Das Naggenwatcher = Outdated but close to ~100 keys

http://www.tf2outpost.com/trade/25473675

http://i.imgur.com/KzlqOiX.png

Mini-suggestion for Nuts Soldier's Stash*:

http://backpack.tf/item/947510893 | http://i.imgur.com/Ltm2x4m.png - B/O of 30 keys (has had it for almost 6 months already)

Notes:

Currently none on the market.

Conclusion:

Two valid sales at ~130 keys and ~140 keys, along with a support-sale at ~100 keys showing that the current price is extremely oudated. Taking a final range of 130-140 keys.

Feel free to support/counter my suggestion!