https://marketplace.tf/items/tf2/31049;5;u14

$55.01 = 30 keys

$90.00 = 49 keys

$58.11 = 32 keys

$56.01 = 31 keys

$90.00 = 50 keys

$95.00 = 52 keys

$55.00 = 30 keys

https://backpack.tf/item/7955297860

https://backpack.tf/item/7963092955

https://backpack.tf/item/8054197191

all these item histories went into marketplace at one point, and they are also all below in the other sales

https://backpack.tf/profiles/76561198066956277#!/compare/1566864000/1567468800

https://backpack.tf/profiles/76561198135935874#!/compare/1567209600/1567296000

Untraceable, might be Marketplace

https://backpack.tf/profiles/76561198084708697#!/compare/1567382400/1567468800

https://backpack.tf/profiles/76561198057747574#!/compare/1567382400/1567468800

Bulk

https://backpack.tf/profiles/76561198084708697#!/compare/1567123200/1567209600

https://backpack.tf/profiles/76561198049098788#!/compare/1567123200/1567209600

Sold for Green Energy Hot Dogger + Terr-W Nanobalaclava

https://backpack.tf/suggestion/5db07ae26780727cc06d532d Hot Dog is 49 keys

https://backpack.tf/profiles/76561198154211785#!/compare/1568592000/1568764800

https://backpack.tf/profiles/76561198057747574#!/compare/1568678400/1568764800

Untraceable, possibly quicksold for keys

https://backpack.tf/profiles/76561198154211785#!/compare/1569024000/1569110400

https://backpack.tf/profiles/76561198329023090#!/compare/1569024000/1569110400

Went with stuff for Stormy 13th Bloke's Bucket, better used on that

https://backpack.tf/profiles/76561198050560740#!/compare/1569024000/1569110400

https://backpack.tf/profiles/76561198329023090#!/compare/1569024000/1569110400

Sold for keys, unsure how many

https://backpack.tf/profiles/76561198011323442#!/compare/1569456000/1569715200

https://backpack.tf/profiles/76561198050560740#!/compare/1569542400/1569628800

Untraceable

https://backpack.tf/profiles/76561198150930904#!/compare/1565481600/1565568000

Went with 8 keys for Nebula Head of Hot Hair

https://marketplace.tf/items/tf2/30662;5;u99 Many sales on the Head of Hot Hair for 45-50 keys

This sale is approximately 40 keys which fits within the range. This sale is minuscule compared to 7 Marketplace sales.

https://backpack.tf/profiles/76561198027338258#!/compare/1567641600/1567728000

https://backpack.tf/profiles/76561198170242226#!/compare/1567555200/1568678400

Untraceable

https://backpack.tf/profiles/76561198027338258#!/compare/1569628800/1569888000

https://backpack.tf/profiles/76561197994697258#!/compare/1569801600/1569888000

Bulk

Going with 30-50 keys