Sale 1:

Sold for a Smoking Janissary Ketche

Was offered so no overpay: 10 keys

No outpost trade

Seller Before: http://backpack.tf/profiles/76561198026830211?time=1429426800

Seller After: http://backpack.tf/profiles/76561198026830211?time=1429599600

Proof of the offer:

Zapperzz | WOO BDAY!!!: hmm, okay. just curious, what did you pay for it?

CSn |TheGrandPooba: Not much lol..

CSn |TheGrandPooba: It's clean on mine

CSn |TheGrandPooba: Smoking Ketche, he offered on ketche and I said ok whatever

Sale 2:

Sold for a Terror-Watt Professional's Panama

(12.5*0.9) = 11.25 rounding to 11

http://www.tf2outpost.com/trade/25456967

Seller Before: http://backpack.tf/profiles/76561198165055074?time=1426834800

Seller After: http://backpack.tf/profiles/76561198165055074?time=1427007600

Conclusion:

Sales at 10 and 11, taking the final range at 10 to 11 keys.