7 month old price

Sold for Green Energy Scotch Bonnet (~30 keys) + 11 keys = 41 keys

http://www.tf2outpost.com/trade/26781566

http://backpack.tf/profiles/76561198001759277?time=1439708400

Part of a bulk deal for a Sulphurous Brotherhood of Arms

http://www.tf2outpost.com/trade/26298122

Offered on (and sold for) a Spec. Australium Medi Gun (~26 at time of sale) = ~29 keys

http://www.tf2outpost.com/trade/26589745

http://backpack.tf/profiles/76561198142768910?time=1438153200 (can discern nothing else being involved)

http://steamcommunity.com/market/listings/440/Specialized%20Killstreak%20Medi%20Gun%20Kit (kit adds ~3 keys)

Sold for Haunted Ghosts Hallmark (~33 keys)

http://www.tf2outpost.com/trade/26280396

http://backpack.tf/profiles/76561198097145578?time=1437116400 (Before)

http://backpack.tf/profiles/76561198097145578?time=1437202800 (After)

http://backpack.tf/profiles/76561198097145578?time=1437116400&compare=1437202800 (Script)

Sold for Ghosts Drill Hat (used to price drills)

http://www.tf2outpost.com/trade/26651900

http://backpack.tf/vote/id/55ca4fe7b98d883c698b457f

DUPED WAR PIG (Price is above the threshold where this matters though the sales would suggest otherwise)

Sold for duped Green Energy Salty Dog (~41 keys)

http://www.tf2outpost.com/trade/26450049

--------Sold for 45 keys

--------http://www.tf2outpost.com/trade/26578839

--------http://backpack.tf/profiles/76561198068674577?time=1439622000

Sold for Maxs (~27 at the time, outlier and sold in a day)

http://www.tf2outpost.com/trade/26445335

http://backpack.tf/profiles/76561198214652780?time=1436684400

I could dig up more sales on the duped one but I doubt it'll change anything at this point since the most recent sale on it matches the high end. Range is being rounded by a key on either end for the sake of neatness, the average value remains identical.