Is that a Tiger in your Pants, or are you happy to see me?

https://backpack.tf/item/7245813520

Sale 1) Bulk sale for a Purple Energy Gauzed Gaze

https://backpack.tf/profiles/76561198041108750#!/compare/1547251200/1547337600

https://steamuserimages-a.akamaihd.net/ugc/945094571615208122/A051AA51328B8BF13E6DFDB1F614D37628609609/ - Thanks, Ramen

https://backpack.tf/item/7314475731

Sale 2) ?

https://backpack.tf/profiles/76561198818515870#!/compare/1543190400/1543536000

https://backpack.tf/profiles/76561198089253393#!/compare/1542672000/1544659200

https://backpack.tf/item/7409565789

Sale 3) ?

https://backpack.tf/profiles/76561198436985917#!/compare/1545782400/1545868800

Sale 4) Sold for $40 when Keys were ~$1.79 each

https://marketplace.tf/items/1196;5;u3006

https://marketplace.tf/items/5021;6/Mann%20Co.%20Supply%20Crate%20Key

40 / 1.79 = 22.34, which rounds to 22 Keys

https://backpack.tf/item/7280917117

Sale 5) Not yet Unusual

https://backpack.tf/profiles/76561198403220050#!/compare/1545264000/1545523200

https://backpack.tf/item/7371989550

Sale 6) ?

https://backpack.tf/profiles/76561198149065009#!/compare/1545696000/1545782400

https://backpack.tf/profiles/76561197997252702#!/compare/1545782400/1545955200

https://backpack.tf/item/7247211131

Sale 7) ?

https://backpack.tf/profiles/76561198804073182#!/compare/1546128000/1546300800

https://backpack.tf/profiles/76561198085347196#!/compare/1546128000/1546300800

Sale 8) ?

https://backpack.tf/profiles/76561198085347196#!/compare/1546128000/1546300800

https://backpack.tf/profiles/76561198119149660#!/compare/1546214400/1546300800

Sale 9) Sold for $39 when Keys were ~$1.75 each

https://marketplace.tf/items/1196;5;u3006

https://marketplace.tf/items/5021;6/Mann%20Co.%20Supply%20Crate%20Key

39 / 1.75 = 22.28, which rounds to 22 Keys