Spooky

http://backpack.tf/item/5355521548

Sale 1) Sold for a Miami Nights Valley Forge (24 Keys)

http://backpack.tf/profiles/76561198027622807#!/compare/1495152000/1495238400

Valley Mini

http://backpack.tf/suggestion/594412bbc4404507807bab49 - 24 Keys

Sale 2) Sold for a Disco Beat Down Gentleman's Gatsby (24 Keys)

http://backpack.tf/profiles/76561198174209565#!/compare/1495238400/1495324800

Gatsby Mini

http://backpack.tf/suggestion/59444202e33877421644fb92 - 24 Keys

Sale 3) Sold for a Dead Presidents Toy Soldier (19 Keys) + Power Surge Halogen Head Lamp (15 Keys)

http://backpack.tf/profiles/76561198167149339#!/compare/1495238400/1495324800

19 + 15 = 34 Keys

http://backpack.tf/item/1588860221

Sale 4) Sold for a Vivid Plasma Hotrod

http://backpack.tf/profiles/76561198156055894#!/compare/1493078400/1495324800

Can be used for the Hotrod because it has no usable Mini.

http://backpack.tf/item/1367887209

Sale 5) Sold for a Miami Nights Bubble Pipe (16 Keys) + Bubbling Voodoo Juju (11.5 Keys) + 1 Key + ~1 Key of Items + ~0.25 Keys of Metal

http://backpack.tf/profiles/76561198123288580#!/compare/1490313600/1490400000

16 + 11.5 + 1 + 1 + .25 = 29.75, which rounds to 30 Keys

Bubble Pipe Mini

http://www.tf2outpost.com/trade/29221312 - Seller at 16 Keys

http://imgur.com/a/Hhgfi - 2 Sellers (1 is the one above) at 16 Keys.

Sale 6) Sold + ~0.4 Keys of Items for a Showstopper Buy a Life (33.5 Keys)

http://backpack.tf/profiles/76561198090614429#!/compare/1491696000/1491782400

33.5 - 0.4 = 33.1, which rounds to 33 Keys

Sale 7) Sold for a Strange Tesla Coil Wing Mann (14 Keys) + 4 Keys + ~2 Keys of Metal

http://backpack.tf/profiles/76561198174172569#!/compare/1492300800/1494028800

Low Outlier.

Calling 24 low because of this Buyer at 24 Keys: http://imgur.com/a/nq2KT