Only two have been traded:

https://backpack.tf/item/2853119865

Scammed and bounced between alts?: https://backpack.tf/item/7958399975

Couldn't find a single sale for that one.

Sale #1, Aug 8th:

Seller: https://backpack.tf/profiles/76561198027620443#!/compare/1550188800/1565222400

Buyer: https://backpack.tf/profiles/76561198197292179#!/compare/1565136000/1565222400

Untraceable, mp.tf sale???

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Sale #2, Aug 22th:

Seller: https://backpack.tf/profiles/76561198197292179#!/compare/1566345600/1566432000

Buyer: https://backpack.tf/profiles/76561198158517626#!/compare/1566259200/1566518400

Untraceable, mp.tf sale???

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Sale #3, Aug 25th:

Seller: https://backpack.tf/profiles/76561198158517626#!/compare/1566518400/1566950400

Buyer: https://backpack.tf/profiles/76561198108608612#!/compare/1566604800/1566691200

Bulk for Demonflame Fed Fightin' Fedora

<50%, excluding

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Marketplace.tf sales, https://marketplace.tf/items/tf2/760;5;u16:

Sale #4, Aug 9th:

70$, keys were 1.83$ = 38 keys

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Sale #5, Aug 25th:

75$, keys were 1.82$ = 41 keys

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I think it's very unlikely that the one for 100$ will sell.

Taking 38-41