Resuggestion with new sales

Sale 1: 930 Keys (Item 1: https://backpack.tf/item/11921621261)

Buyer:https://backpack.tf/profiles/76561198262099084#!/compare/1659744000/1659830400

Seller: https://backpack.tf/profiles/76561198095638530#!/compare/1659657600/1659744000

Compare being messy as always.

Proof of trade/ discussion: https://imgur.com/a/QC63xuk

Sale 2: Untraceable (most likely a cash trade) (Item 2: https://backpack.tf/item/12039070984)

Buyer: https://backpack.tf/profiles/76561198001634629#!/compare/1661990400/1662940800

Seller: https://backpack.tf/profiles/76561198405936099#!/compare/1662249600/1662336000

I have attempted to add both parties to discuss how much the sale was but neither is interested in discussing it.

Sale 3: Community Market Sale ( $1188.96 USD ÷ 2.15 USD = 553 keys) (Item 3: https://backpack.tf/item/12048423792)

Proof of sale: https://imgur.com/a/uzlMbVd

Sale 4: 675 keys

Proof of sale: https://imgur.com/a/Idkh5qU (sorry for the image being small)

Buyer: https://backpack.tf/profiles/76561198841365001 (private inventory)

Seller: https://backpack.tf/profiles/76561199099521803#!/compare/1663113600/1663200000

553,675,930. Will be doing a range as suggested by Vege (thank you for the help with this Vege)

For the 930 sale, you can multiply the price of the keys (3.31 AUD) by 930 and see the value on the left to prove that it was 930 keys. ($3078.30 AUD)

Some new sales

Item 2: Undisclosed/Untraceable

https://backpack.tf/profiles/76561198001634629#!/compare/1664582400/1664841600

An undisclosed sale which I can't find much evidence for. Probably a 1 for 1 for the Cold Cosmos decorated veteran + some cash would be my best guess but there's no way to tell and Fire is 100% not interested in discussing it with me. (Backpack hasn't tracked who the previous owner of the Cold Cosmos was or where this Divine Sunlight Veteran is now).

Item 4: Bulk sale

History: https://backpack.tf/item/12079641924

Seller: https://backpack.tf/profiles/76561198113992461#!/compare/1664668800/1665446400

Buyer: https://backpack.tf/profiles/76561198063640894#!/compare/1665273600/1665446400

That's all I could find of recent sales.