Item 1:

https://next.backpack.tf/item/17044072607

Sale 1:

https://marketplace.tf/items/tf2/31200;5;u376

$450/1.95 ~ 230 keys

Item 2:

https://next.backpack.tf/item/16860551001

Sale 1:

https://next.backpack.tf/profiles/76561198073382327/compare?from=1774569600&to=1774656000

https://backpack.tf/profiles/76561198073382327#!/compare/1774569600/1774656000

Sunbeams Brotherhood of Arms + 45 keys pure

Sunbeams Brotherhood of Arms: 

https://next.backpack.tf/suggestions/6a1ee9524dfbda245f0de388

Taking average 253 keys

253 + 45 = 298 keys

Taking 230-298