Party Reserves

https://backpack.tf/item/369222009

Sale 1) ?

https://backpack.tf/profiles/76561198040447558#!/compare/1547683200/1548028800

https://backpack.tf/profiles/76561198252999692#!/compare/1547856000/1547942400

Sale 2) Sold for a Scorching Flames Tough Guy's Toque (49.5 Keys) + 3 Keys

https://backpack.tf/profiles/76561198252999692#!/compare/1547942400/1548028800

49.5 + 3 = 52.5, which rounds to 53 Keys

Toque Mini

Sold for a Clairvoyance Hephaistos' Handcraft (22.5 Keys) + Miami Nights Lucky Shot (21.5 Keys) + 5 Keys + ~1 Key of Items

https://backpack.tf/profiles/76561198119149660#!/compare/1547942400/1548028800

https://backpack.tf/profiles/76561198867231551#!/compare/1547942400/1548028800

https://marketplace.tf/items/97;5;u14 - Sold for $88 (50 Keys) and $99.99 three times (61 Keys, 57 Keys, and 57 Keys)

https://imgur.com/a/v2271ij - Seller at 42 Keys

Taking 42 - 57 Keys for the Toque.

Sale 3) Quicksold for 44 Keys

https://backpack.tf/profiles/76561198867231551#!/compare/1548028800/1548115200

https://backpack.tf/profiles/76561198273681900#!/compare/1548028800/1548115200

https://backpack.tf/item/281576594

Sale 4) Sold + Purple Confetti Lucky Shot for a Green Energy Shellmet

https://backpack.tf/profiles/76561198367617045#!/compare/1546214400/1546300800

This should be used to price the Shellmet.

Sale 5) Bulk sale for a Dark Doorway Hephaistos' Headcraft

https://backpack.tf/profiles/76561198119577562#!/compare/1546473600/1546560000

https://backpack.tf/item/247468278

Sale 6) Bulk sale

https://backpack.tf/profiles/76561198235861606#!/compare/1543449600/1543536000

https://backpack.tf/profiles/76561198062425416#!/compare/1543449600/1543536000

Sale 7) Sold for 49 Keys

https://backpack.tf/profiles/76561198062425416#!/compare/1546905600/1546992000

Sale 8) Bulk sale

https://backpack.tf/profiles/76561198126546221#!/compare/1547683200/1547769600

https://marketplace.tf/items/54;5;u6 - Sold for $85 when Keys were ~$1.71 each

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

85 / 1.71 = 49.71, which rounds to 50 Keys