Randy requested a counter.

Sale 1: Sold with sweets for Vivid Worst Nightmare[outdated at 40~]

http://www.tf2outpost.com/trade/27798680 b/o was 33

https://backpack.tf/profiles/76561198079963566/#!/compare/1454832000/1455004800

b/o was 33 keys, capping it at that.

Credits to Foamy for this sale.

Sale 2: Sold for 31 keys

http://www.tf2outpost.com/trade/27759130

https://backpack.tf/profiles/76561198024174146/#!/compare/1454227200/1454313600

Credits to Foamy for this sale.

Sale 3: Sold for 32 keys

https://i.gyazo.com/4a3f04099679048595bc4ca7804735d6.gif

Credits to Randy for this sale.

Sale 4: Sold for Dead Presidents Front Runner[26 keys]+Strange Nuts n' Bolts Bonk Boy[outdated at 20 keys]+Strange Cadet Visor painted lime[1 key~]

https://backpack.tf/profiles/76561198150013695/#!/compare/1457938800/1458111600

26+20+1=47 keys

So I have sales at 31, 32, 33 and 47. Making this a range of 31-33 keys and calling 47 keys the outlier here.