Suggestion: The Eldritch Opening Highway Star at 46–50 keys

Sold for a Spectral Wick Headhunter's Brim + 24 keys (ID "13897966480" of the unusual matches, even taking buyers for the Brim at 41 would make this too high given sellers at 51 for this)-

Seller: https://backpack.tf/profiles/76561198140316312#!/compare/1702080000/1702166400

Buyer: https://backpack.tf/profiles/76561199407031624#!/compare/1702166400/1702252800

Sale #4

Sold with 2 keys for a Sunbeams Murderer's Motif (ID "13928688875" of the unusal matches, taking buyers for the Motif at 60 would make this too high given sellers again)-

Seller: https://backpack.tf/profiles/76561199407031624#!/compare/1702598400/1702771200

Buyer: https://backpack.tf/profiles/76561199232380670#!/compare/1702684800/1702771200

Sale #5

Sold for 46 keys (ID "13965694547" of the unusual matches)-

Seller: https://backpack.tf/profiles/76561199232380670#!/compare/1703462400/1703548800

Buyer: https://backpack.tf/profiles/76561199047755765#!/compare/1703462400/1703548800

Item 3

https://backpack.tf/item/7373220317

Sale #6

Untraceable? Was a dump anyways-

Seller: https://backpack.tf/profiles/76561198017060489#!/compare/1707091200/1707696000

Buyer: https://backpack.tf/profiles/76561199059698603#!/compare/1707696000/1707782400

Item 4

https://backpack.tf/item/9283791806

Sale #7

Bulk sale-

Seller: https://backpack.tf/profiles/76561198031618528#!/compare/1704412800/1707696000

Buyer: https://backpack.tf/profiles/76561198053843359#!/compare/1707523200/1707696000

Sale #8

Untraceable?-

Seller: https://backpack.tf/profiles/76561198053843359#!/compare/1707782400/1707955200

Buyer: https://backpack.tf/profiles/76561198066659979#!/compare/1695600000/1707955200

Item 5

https://backpack.tf/item/7723773643

Sale #9

Untraceable?-

Seller: https://backpack.tf/profiles/76561198849016315#!/compare/1705708800/1705795200

Buyer: https://backpack.tf/profiles/76561199132627345#!/compare/1705708800/1705795200

Sale #10

Untraceable?-

Seller: https://backpack.tf/profiles/76561199132627345#!/compare/1705795200/1705881600

Buyer: https://backpack.tf/profiles/76561198263905151#!/compare/1708300800/1708732800

Item 6

https://backpack.tf/item/10481106092

Sale #11

Sold for 50 keys + 27.55 refined (all the metal and keys seen leaving the buyer's side match)-

Seller: https://backpack.tf/profiles/76561199103991885#!/compare/1701648000/1701734400

Buyer: https://backpack.tf/profiles/76561199183541107#!/compare/1701648000/1701734400

Item 7

https://backpack.tf/item/10594453388

Sale #12

Bulk sale-

Seller: https://backpack.tf/profiles/76561198220098345#!/compare/1702166400/1702252800

Buyer: https://backpack.tf/profiles/76561199523473683#!/compare/1702166400/1702252800

Sale #13

Sold for 55 keys (ID '14069308426" of the unusual matches)-

Seller: https://backpack.tf/profiles/76561199523473683#!/compare/1705622400/1705708800

Buyer: https://backpack.tf/profiles/76561199211069231#!/compare/1705622400/1705708800

Sale #14

Bulk sale-

Seller: https://backpack.tf/profiles/76561199211069231#!/compare/1706140800/1706313600

Buyer: https://backpack.tf/profiles/76561198415564349#!/compare/1706227200/1706313600

Item 8

https://backpack.tf/item/10635610364

Sale #15

Untraceable?-

Seller: https://backpack.tf/profiles/76561199072654974#!/compare/1706054400/1706140800

Buyer: https://backpack.tf/profiles/76561199116198115#!/compare/1706054400/1706140800

Sale #16

Transferred from bot to owner-

Seller: https://backpack.tf/profiles/76561199116198115#!/compare/1706054400/1706140800

Buyer: https://backpack.tf/profiles/76561198061836787#!/compare/1706054400/1706140800

Item 9

https://backpack.tf/item/11312780218

Sale #17

Sold for 57 keys + 59.22 refined (ID "13977608154" of the unusual matches)-

Seller: https://backpack.tf/profiles/76561198421652838#!/compare/1703721600/1703808000

Buyer: https://backpack.tf/profiles/76561198389255104#!/compare/1703635200/1703808000

Sale #18

Untraceable? Was a dump anyways-

Seller: https://backpack.tf/profiles/76561198389255104#!/compare/1703808000/1704153600

Buyer: https://backpack.tf/profiles/76561198311498888#!/compare/1703808000/1703894400

MP.TF Sale #1

Sold for $111.11 on February 9, 2024

Average Key Price @ $1.70ish

111.11/1.70 = 65.35ish keys

Unknown History?

https://marketplace.tf/items/tf2/31010;5;u115

Sales @ 46, 50, 55, 58, 63

Excluding 58 given it was dumped afterwards and 55 and 63 given they are above several buyers at 51

Range is fine but not sure where you even pulled a 50 sale here before as there's none in your suggestion and you also failed to include so many sales here for some reason?

Thanks for double checking this.