Sale #1:

https://backpack.tf/profiles/76561198107067824#!/compare/1550102400/1550188800

Sold for 78 keys.

78 keys

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Sale #2:

https://backpack.tf/profiles/76561198132182386#!/compare/1549065600/1549238400

Sold for a Spellbound FR-0 (90 keys).

90 keys

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Sale #3:

https://backpack.tf/profiles/76561198093438754#!/compare/1547251200/1547337600

Sold for 93 keys.

93 keys

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Sale #4:

https://backpack.tf/profiles/76561198232041512#!/compare/1553558400/1553644800

Sold for 100 keys.

100 keys.

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Minis:

Spellbound FR-0:

https://backpack.tf/profiles/76561197998934095#!/compare/1549929600/1550102400

https://backpack.tf/profiles/76561198132182386#!/compare/1550016000/1550102400

https://backpack.tf/profiles/76561198043566764#!/compare/1550016000/1550102400

Pretty sure it sold for 90 keys (or possibly 91).

90 keys

Sales:

78, 90, 93, 100. Going with 90 - 100 keys.