Might have sales one day outdated since I've been working on the suggestions for two days!

https://marketplace.tf/items/tf2/97;5;u9

Marketplace.tf Sales

$59.99 / $1.92 = 31.24 keys (https://backpack.tf/item/6226315254)

$59.99 / $1.96 = 30.61 keys

$59.99 / $1.92 = 31.24 keys

Sale #1

Sold for a Strange Festivized Killstreak Australium Grenade Launcher (16.23 keys) + a Strange Specialized Killstreak Australium Stickybomb Launcher (16.68 keys) + a Strange Specialized Killstreak Australium Ambassador (9.59 keys) = 16+17+10 = 43 keys-

Seller: https://backpack.tf/profiles/76561198021055079#!/compare/1589846400/1589932800

Buyer: https://backpack.tf/profiles/76561198982448547#!/compare/1589932800/1589932800

Sale #2

Untraceable-

Seller: https://backpack.tf/profiles/76561198982448547#!/compare/1589932800/1589932800

Buyer: https://backpack.tf/profiles/76561199040866236#!/compare/1592265600/1592784000

Sale #3

Untraceable-

Seller: https://backpack.tf/profiles/76561199053407489#!/compare/1596153600/1596672000

Buyer: https://backpack.tf/profiles/76561198311498888#!/compare/1596240000/1596672000

Sale #4

Quicksold-

Seller: https://backpack.tf/profiles/76561198311498888#!/compare/1596585600/1596672000

Buyer: https://backpack.tf/profiles/76561198203097805#!/compare/1596499200/1596672000

Sale #5

Sold with 8 keys for a Green Energy Towering Pillar of Hats (35 keys) = 27 keys-

Seller: https://backpack.tf/profiles/76561198396582847#!/compare/1589241600/1589414400

Buyer: https://backpack.tf/profiles/76561198340434037#!/compare/1589241600/1589328000

Sale #6

Sold for a Disco Beat Down Gilded Guard (13 keys) + 13 keys [using current suggestion for the DB Guilded, thanks to Scourge for making it!] = 26 keys-

Seller: https://backpack.tf/profiles/76561198340434037#!/compare/1589328000/1589414400

Buyer: https://backpack.tf/profiles/76561198161951321#!/compare/1589155200/1589414400

Sale #7

Untraceable-

Seller: https://backpack.tf/profiles/76561198161951321#!/compare/1589155200/1589414400

Buyer: https://backpack.tf/profiles/76561198072122902#!/compare/1589500800/1589587200

Sale #8

Untraceable-

Seller: https://backpack.tf/profiles/76561198072122902#!/compare/1589500800/1589587200

Buyer: https://backpack.tf/profiles/76561198305494036#!/compare/1589500800/1589587200

Sale #9

Untraceable-

Seller: https://backpack.tf/profiles/76561198325529303#!/compare/1585094400/1591660800

Buyer: https://backpack.tf/profiles/76561198850266056#!/compare/1591660800/1591747200

Sale #10

Sold with 2 keys for a Bubbling Le Party Phantom (25.5 keys) [using the current suggestion for the Party Phantom, thanks for WesBoy for making it!] = 24 keys-

Seller: https://backpack.tf/profiles/76561198035566253#!/compare/1589155200/1589241600

Buyer: https://backpack.tf/profiles/76561198396582847#!/compare/1589068800/1589241600

Sales @ 24, 26, 27, 31, 31, 31, 43

Taking 24-31 for now