'Til the roof comes off, 'til the lights go out.

https://backpack.tf/item/8027068642

Sale 1) ?

https://backpack.tf/profiles/76561198118744277#!/compare/1566777600/1567036800

https://backpack.tf/profiles/76561198100717662#!/compare/1566950400/1567036800

https://backpack.tf/item/6975708373

Sale 2) Sold for 16 Keys

https://backpack.tf/profiles/76561198113899098#!/compare/1564012800/1564099200

Sale 3) Sold + 2 Keys + ~2 Keys of Items for a Strange Stormy Storm Thirst Blood (19 Keys)

https://backpack.tf/profiles/76561198271982139#!/compare/1564358400/1564790400

https://backpack.tf/profiles/76561198324714018#!/compare/1564704000/1564790400

19 - 2 - 2 = 15 Keys

Sale 4) ?

https://backpack.tf/profiles/76561198060201259#!/compare/1561248000/1561420800

https://backpack.tf/item/6806930925

Sale 5) Sold for a Circling TF Logo Kiss King

https://backpack.tf/profiles/76561198085557220#!/compare/1564358400/1564444800

Using there.

Sale 6) Sold for a Circling Peace Sign Metal Slug + Nuts and Bolts Tsarboosh

https://backpack.tf/profiles/76561198119629072#!/compare/1564876800/1564963200

Fits in the range due to buyers at 7 for the Slug -> https://imgur.com/a/AKAVZcI and 6 for the Tsarboosh -> https://imgur.com/a/hxhePJF

https://imgur.com/a/Q79OcY8 - This sale had a Buyout of 16 Keys

https://backpack.tf/u/76561198337734785 - Slug Buyer #1

https://backpack.tf/u/76561198002757046 - Slug Buyer #2

https://backpack.tf/u/76561197999873164 - Slug Buyer #3

https://backpack.tf/u/76561198323565601 - Tsarboosh Buyer

https://backpack.tf/item/6766598741

Sale 7) ?

https://backpack.tf/profiles/76561197994526328#!/compare/1563840000/1564099200

https://backpack.tf/profiles/76561198054003760#!/compare/1552694400/1565308800

Sale 8) ?

https://backpack.tf/profiles/76561198054003760#!/compare/1565308800/1566000000

https://backpack.tf/profiles/76561198206072125#!/compare/1562457600/1566432000

https://backpack.tf/item/6816535955

Sale 9) ?

https://backpack.tf/profiles/76561198173567891#!/compare/1559779200/1560297600

https://backpack.tf/profiles/76561198085108841#!/compare/1560124800/1560211200

Sale 10) Bulk sale

https://backpack.tf/profiles/76561198085108841#!/compare/1561161600/1561248000

https://backpack.tf/profiles/76561198114402400#!/compare/1561075200/1561161600

Sale 11) Sold for a Searing Plasma Trucker's Topper + Bill's Hat (~2 Keys)

https://backpack.tf/profiles/76561198114402400#!/compare/1561852800/1561939200

https://imgur.com/a/eJNoni2 - Capped by the Buyout of 16 Keys

Sale 12) Sold + 0.8 Keys of Items for a Steaming Tundra Top

https://backpack.tf/profiles/76561198056051607#!/compare/1562025600/1562284800

High outlier.

Sale 13) ?

https://backpack.tf/profiles/76561198224648164#!/compare/1562025600/1562112000

Sale 14) Sold for 10 Keys + Spec KS Strange Festive Crossbow (~6.5 Keys) + ~0.5 Keys of Refined

https://backpack.tf/profiles/76561198002757046#!/compare/1563667200/1563753600

https://backpack.tf/profiles/76561198160037972#!/compare/1563580800/1563753600

https://imgur.com/a/DCly1br - Capped by the Buyout of 14 Keys

https://marketplace.tf/items/tf2/30976;5;u6 - Sold for $24.20 (13 Keys), $24 (13 Keys), and $33.90 twice (18.5 Keys and 18.7 Keys)

https://marketplace.tf/items/tf2/5021;6

https://imgur.com/a/fGjgfwK - Calling 17 and above because of an 11 Day Seller at 16 Keys and a 1 Month Seller at 17 Keys. Also 4 Buyers at 12 Keys

https://backpack.tf/item/6806930925

https://backpack.tf/item/6816535955

https://backpack.tf/u/76561198061275415

https://backpack.tf/u/76561198002757046

https://backpack.tf/u/76561198337734785

https://backpack.tf/u/76561198341171690