Noice,

Item 1: https://backpack.tf/item/3394469164

No Sales

Item 2: https://backpack.tf/item/7959822013

No Sales

Item 3: https://backpack.tf/item/3275984580

No Sales

Item 4: https://backpack.tf/item/9394954794

Sale 1:

https://backpack.tf/profiles/76561198053277193#!/compare/1631404800/1631491200

https://backpack.tf/profiles/76561198834804688#!/compare/1631491200/1631577600

Untraceable, might be those 27 keys since buyout was 30 at the time of sale (https://gladiator.tf/listings/613ed8616ebf082b202fe553), but histories of keys don't seem to match

Sale 2:

https://backpack.tf/profiles/76561198834804688#!/compare/1638489600/1638921600

https://backpack.tf/profiles/76561198164651434#!/compare/1638835200/1638921600

Looks like added with a Haunted Scorched Skirt (recently priced at 1.4 keys, https://backpack.tf/suggestion/6182c2d46f03ee6d2d1e538d) for a Molten Mallard Trash Man, which was just repriced at 31 (https://backpack.tf/suggestion/61ad9acda21fb41ee30ddc89), so 31-1.4 = 29.6 ~ 30

So we got one definitive sale valued at 30 keys so taking as such