Resuggestion from https://backpack.tf/suggestion/5f048d522881ed002b286a8b

Copy pasting proof as is because none of it is mine:

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Proof by https://backpack.tf/u/76561198804015732

https://bot.tf/stats/item?def=30004&q=5&ef=Miami%20Nights&craft=1&aus=0&ks=0&source=browser_script

killua bought for 33k, sold for 35k

buy: https://backpack.tf/profiles/76561198055672922#!/compare/1587686400/1588291200

sell: https://backpack.tf/profiles/76561198305494036#!/compare/1588118400/1588204800

https://marketplace.tf/items/tf2/30004;5;u61

https://backpack.tf/item/3336295842

$90 on 5/5 (48)

https://backpack.tf/profiles/76561198044925142#!/compare/1588118400/1588377600

https://backpack.tf/profiles/76561198084727676#!/compare/1586563200/1588118400

terror watt sensei + 10k, using there

https://bot.tf/stats/listings/M19X6LJQ

im taking 35-48 here cuz there was a 40k seller at the time of the 48k sale

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Proof by https://backpack.tf/u/76561198086247757

One new unusable sale

Bulk/untrace

https://backpack.tf/profiles/76561198056681334#!/compare/1594166400/1594339200

https://backpack.tf/profiles/76561198235159048#!/compare/1594080000/1594166400

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Proof by https://backpack.tf/u/76561198156255538

https://backpack.tf/profiles/76561198089207865?time=1588550400 - confirms the seller mentioned at 40 was not the mp.tf seller

While the TW Sensei is best outdated, I would be fine using the 30 key sale there as a mini, since this sale only happened a couple of weeks after the 30 sale, making 30 was a good indicator of the price of the TW Sensei at the time of the sale.

That makes 30 + 10 = 40

https://backpack.tf/profiles/76561198142721484#!/compare/1591833600/1592006400

https://backpack.tf/profiles/76561198303886984#!/compare/1591920000/1592006400

https://bot.tf/stats/listings/4O9XD66P - B/O was 48

Looks like 40 pure here

https://imgur.com/a/R5nDd3B - current market, buyers up to 37.

https://imgur.com/a/UKw7SXX - Killua sold it ~30 min after buying according to bot.tf timestamps in addition to being under buyers

40 - 48 seems fine here

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Going with 40-48