Resuggestion from https://backpack.tf/suggestion/5e31dd9420243303925a9ba4

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https://marketplace.tf/items/tf2/434;5;u13

$56.76 = QS price

$134.99 = 76 keys

$120.00 = 67 keys

$134.99 = 76 keys

$134.99 = 76 keys

https://backpack.tf/item/6261036726

https://backpack.tf/item/3048839007

one of the 76s with a 75 key buyout, other with 80 i suppose

https://bot.tf/stats/listings/4ZK2017X

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https://backpack.tf/profiles/76561198337734785#!/compare/1574121600/1574208000

https://backpack.tf/profiles/76561198293654690#!/compare/1574121600/1574208000

https://bot.tf/stats/listings/MLRONRR8

Looks like the Huntsman and Burstchester were QSed to bots (hinted by the refined remainders in the 2nd compare link) and all the keys were used to buy the Brain Bucket for zol's buyout of 60 keys

Looks like it took a little over a month to sell https://backpack.tf/item/3048839007

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https://backpack.tf/profiles/76561198293654690#!/compare/1574467200/1574553600

https://backpack.tf/profiles/76561198072164101#!/compare/1574467200/1574553600

Bulk

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https://backpack.tf/profiles/76561197960571563#!/compare/1584230400/1584316800

https://backpack.tf/profiles/76561198059021831#!/compare/1584230400/1584316800

slumber lucky, c9 impaler, terror bucket and some keys

buyers on lucky shot at 38, impaler has several sales on mp around 13-15 keys, terror watt bucket has some sales on mp around 11 keys

6 keys added

38, 14, 11, 6 = 69 keys

buy out was 72 keys https://bot.tf/stats/listings/429D267Z

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Sales

60

67

69+ in buyers and MP sales, buyout of 72

75

76

76

going with 67-76 keys