Resuggestion, credits to Moonman for 2nd and 3rd sales.

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"Original price = 1.5 buds". Yolo.

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Sale #1

http://backpack.tf/profiles/76561198088297597?time=1430031600 before

http://backpack.tf/profiles/76561198088297597?time=1430118000 after

Peace Fuka (~12.5) + Spec.KS. RL(~1.9) + Spec.KS. Scatter(~1.7) = 12.5+1.9+1.7 = 16.1*0.9=14.49 rounded down to 14 due to potential errors in minis for killstreaks.

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Sale #2

http://backpack.tf/profiles/76561198170476747?time=1433302655 before

http://backpack.tf/profiles/76561198170476747 literally right now. (after)

Valley was offered on an aussie ambassador, no overpay. -> 15

http://i.imgur.com/ok2fapZ.png a bit of proof for that ^

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Sale #3

http://imgur.com/I4fQBl9,Ou6e5m9

Valley was bought for - Spec.KS Australium Blut (~13), Spec.KS Diamond MK1 Minigun (~3) and 1 key pure.

13+3=16*0.9=14.4, rounded down to 14. 14+1=15

Minis: Literally took market pricelist values for them, sales are around that amount anyway.

Supportive trades aka why should it DIE:

http://www.tf2outpost.com/trade/25777372 1 month, 30 keys, no offers, still unsold.

http://www.tf2outpost.com/trade/25338080 - same, 2 months

http://www.tf2outpost.com/trade/25613538 - unknown b\o, 1 month.

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Conclusion: Damn, i didn't write such a long suggestion.. ever.

One trade for 14 keys, two trades for 15. Price = 14 - 15