I used to own this hunk-a shit

Sale 1: sold for a Haunted Ghosts Frenchman's Beret (no available mini, not using).

seller bp before: http://backpack.tf/profiles/76561197968530016?time=1438758000

seller bp after: http://backpack.tf/profiles/76561197968530016?time=1438844400

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Sale 2: sold for a Molten Mallard Toy Tailor (36)

seller bp before: http://backpack.tf/profiles/76561198117484140?time=1436770800

seller bp after: http://backpack.tf/profiles/76561198117484140?time=1436857200

36*0.9

= 32.4 (r<)

> 32

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Sale 3: sold for a Strange Specialized Killstreak Australium Scattergun (34)

seller bp before: http://backpack.tf/profiles/76561198073922042?time=1435734000

seller bp after: http://backpack.tf/profiles/76561198073922042?time=1435820400

34*0.9

= 30.6 (r>)

> 31

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Outpost: only 1 seller on outpost (duped) asking for 35 pure:

http://www.tf2outpost.com/trade/26996486

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Conclusion: Using the sales provided, a range of 31-32 keys seems fair so taking it.