Mega Strike Schadenfreude

Team 1 (iTrade)

Sale 1: Sold with 1.5 keys for Terror-Watt Polar Bear (14) -- 12.5; rounding to 13

https://backpack.tf/profiles/76561198203878624#!/compare/1529020800/1529107200

Mini Polar Bear: https://backpack.tf/suggestion/5b670ffe44325a4e60132282

Sale 2: Sold for Strange Festivized Professional Killstreak Stickybomb Launcher (8) + 2 pure → 10

https://backpack.tf/profiles/76561198183424550#!/compare/1530230400/1530316800

Sale 3: 39.9 USD; 1 key = 1.94 USD → 20.5; rounding to 21 keys

https://marketplace.tf/items/463;5;u3010

https://backpack.tf/item/4350273355

Sale 4: 10 USD; low outlier

https://marketplace.tf/items/463;5;u3010

Sale 5: 34.99 USD; 1 key = 1.94 USD → 18 keys

https://marketplace.tf/items/463;5;u3010

Sale 6: 32 USD; 1 key = 1.95 USD → 16 keys

https://marketplace.tf/items/463;5;u3010

Sale 7: 38 USD; 1 key = 1.93 USD → ~19.5; rounding to 20 keys

https://marketplace.tf/items/463;5;u3010

Sale 8: 16 keys pure

https://backpack.tf/profiles/76561198148867840#!/compare/1531353600/1532304000

Sale 9: Bulk for Aussie Eyelander

https://backpack.tf/profiles/76561198044111759#!/compare/1530230400/1530403200

Sale 10: Untraceable

https://backpack.tf/profiles/76561198132176657#!/compare/1527811200/1528329600

Sale 11: Untraceable

https://backpack.tf/profiles/76561198412095751#!/compare/1528329600/1528416000

Sale 12: Untraceable

https://backpack.tf/profiles/76561198088444285#!/compare/1503878400/1531353600

https://backpack.tf/profiles/76561198048511146#!/compare/1531353600/1531440000

Sale 13: Untraceable

https://backpack.tf/profiles/76561197990545681#!/compare/1523836800/1531785600

https://backpack.tf/profiles/76561198075614952#!/compare/1524355200/1529712000

Sale 14: Untraceable

https://backpack.tf/profiles/76561198204297652#!/compare/1527638400/1527984000

Sale 15: Untraceable

https://backpack.tf/profiles/76561198117126947#!/compare/1530316800/1531872000

Sale 16: Untraceable

https://backpack.tf/profiles/76561198046845295#!/compare/1530144000/1530230400

Sale 17: Untraceable, IDs of the keys do not match

https://backpack.tf/profiles/76561198100773215#!/compare/1528243200/1528329600

https://backpack.tf/profiles/76561198034243353#!/compare/1528156800/1528329600

Sale 18: Untraceable

https://backpack.tf/profiles/76561198034243353#!/compare/1528675200/1528761600

Sale 19: Untraceable

https://backpack.tf/profiles/76561198049571500#!/compare/1464480000/1532736000

Sale 20: Untraceable

https://backpack.tf/profiles/76561198823384084#!/compare/1530144000/1530576000

https://backpack.tf/profiles/76561198402308510#!/compare/1530489600/1531267200

No sellers, buyers at 8.5 https://i.imgur.com/sXxhNWc.png

Sales at: 10, 13, 16, 16, 18, 20, 21

Suggesting range from 16 to 18. 10 is obviously low. 13 can be argued is low too. 20 and 21 seem high with 3 sales below and a range from 16 to 21 would be quite wide. The same is true for a range from 13 to 18 which would be too wide, too.