Few sales

Item history; https://backpack.tf/item/13583321668

Only one to move.

Bought for 25 keys pure

https://imgur.com/a/24jauMt

STN Trading

https://stntrading.eu/item/tf2/Unusual+Cool+Secretly+Serviced+Minigun+%28Well-Worn%29

Sold to STN for 19.5 keys, rounding to 20 keys.

https://backpack.tf/profiles/76561198083250307#!/compare/1764374400/1764547200

STN sold it for 23.6 keys, rounding to 24 keys.

https://backpack.tf/profiles/76561199344917918#!/compare/1765324800/1765411200

Compares are all wonky, but site prices reflect last used prices.

Marketplace

https://marketplace.tf/items/tf2/202;15;u703;w4;pk412

Sale for $69.99 on November 28th, $69.99 / $1.81 = 38.66 keys, rounding to 39.

20, 24, 25, 39

Excluding 20, since it's buyers. Including 24, it was on STN long enough to justify including that price.

24 - 39