Item 1: https://backpack.tf/item/10072628056

Sale 1:

https://backpack.tf/profiles/76561198073212780#!/compare/1777334400/1777507200

https://backpack.tf/profiles/76561198261483133#!/compare/1777420800/1777507200

Bulk/backpack purchase

Item 2: https://backpack.tf/item/13398551249

Sale 2:

https://backpack.tf/profiles/76561198022712958#!/compare/1781481600/1781568000

https://backpack.tf/profiles/76561198047263033#!/compare/1781395200/1781481600

19 keys

Sales:

19

Sellers:

BPTF - https://imgur.com/zOUE9m5 none

MPTF - https://marketplace.tf/items/tf2/31160;5;u3129 $39.99 (~22 keys)

STN - https://stntrading.eu/item/tf2/Unusual+Haunted+Cremation+Taunt%3A+Texas+Truckin%27 none

SCM - https://steamcommunity.com/market/listings/440/Unusual%20Taunt%3A%20Texas%20Truckin%27?appid=440&q=Haunted+Cremation https://imgur.com/e23gQNo none

Going with 19 keys