Ooooh... Purple!

https://backpack.tf/item/7660654216

Sale 1: 23 keys

https://backpack.tf/profiles/76561198341171690#!/compare/1560297600/1560384000

https://backpack.tf/profiles/76561198151901778#!/compare/1560384000/1560470400

https://backpack.tf/item/7660654216

Sale 2: 14 keys

https://backpack.tf/profiles/76561198081220016#!/compare/1566000000/1566086400

https://backpack.tf/profiles/76561198335791307#!/compare/1565913600/1566000000

https://backpack.tf/item/7544610771

Sale 3: Sold for a Purple Energy German Gonzila (33-38 Keys; 35.5 Keys in the middle)

https://backpack.tf/profiles/76561198311147586#!/compare/1565481600/1565568000

https://backpack.tf/profiles/76561198106552688#!/compare/1565568000/1565913600

(Mini Suggest for German Gonzila :

https://marketplace.tf/items/tf2/323;5;u10

Sale 1: Sold for 70$

Key Price: 1.82$

70 / 1.82 = 38.46. Rounded is 38 keys.

https://marketplace.tf/items/tf2/323;5;u10

Sale 2: Sold for 60$

Key Price: 1.82$

60 / 1.82 = 32.96. Rounded is 33 keys.

https://backpack.tf/item/376102502

Sale: ?

https://backpack.tf/profiles/76561198823042101#!/compare/1562630400/1565222400

https://backpack.tf/profiles/76561198133882561#!/compare/1562630400/1565222400

https://backpack.tf/item/2414531213

Sale: ?

https://backpack.tf/profiles/76561198311147586#!/compare/1565740800/1565827200

https://backpack.tf/profiles/76561198305676157#!/compare/1565654400/1565827200)

Back to our regularly scheduled program.

https://backpack.tf/item/7411445380

Sale 4: Bulk Sale

https://backpack.tf/profiles/76561198073167542#!/compare/1561248000/1565395200

https://backpack.tf/profiles/76561198049999947#!/compare/1560988800/1566000000

https://backpack.tf/item/7681531170

Sale: ?

https://backpack.tf/profiles/76561198059319460#!/compare/1560470400/1566000000

https://backpack.tf/profiles/76561198323017478#!/compare/1557446400/1562025600

https://backpack.tf/item/7681531170

Sale: ?

https://backpack.tf/profiles/76561198323017478#!/compare/1562025600/1562544000

https://backpack.tf/profiles/76561198014177920#!/compare/1555804800/1564617600

https://backpack.tf/item/7953492324

Sale: ?

https://backpack.tf/profiles/76561198192947173#!/compare/1564185600/1564704000

https://backpack.tf/profiles/76561198105325671#!/compare/1559865600/1564876800

https://backpack.tf/item/7660654216

Sale: ?

https://backpack.tf/profiles/76561198286234945#!/compare/1559865600/1559952000

https://backpack.tf/profiles/76561198341171690#!/compare/1559865600/1559952000

https://backpack.tf/item/7660654216

Sale: ?

https://backpack.tf/profiles/76561198151901778#!/compare/1560470400/1560556800

https://backpack.tf/profiles/76561198335791307#!/compare/1560470400/1560556800

Calling it as 23-35 keys.