Sale 1:

Sold for 15 keys (Buyer’s end, last 15 keys)

https://backpack.tf/profiles/76561198149184661#!/compare/1729468800/1729555200

https://backpack.tf/profiles/76561197967159739#!/compare/1729468800/1729555200

https://backpack.tf/item/13927316516

= 15 keys

Sale 2:

Sold for 14 keys

https://backpack.tf/profiles/76561198208922829#!/compare/1626307200/1730851200

https://backpack.tf/profiles/76561198987196299#!/compare/1730764800/1730851200

https://backpack.tf/item/14996071455

= 14 keys

Sale 3:

Sold for Teamwork Valorance Pooped Deck (Suggestion at 7.75 keys) + 6 keys (Buyer’s end)

https://backpack.tf/profiles/76561199485225128#!/compare/1730592000/1730678400

https://backpack.tf/profiles/76561198393596975#!/compare/1730678400/1730851200

https://backpack.tf/item/5375089641

No B/O

= 14 keys

Teamwork Valorance Pooped Deck:

https://backpack.tf/suggestion/674c622893c22b18260f4149

Other Sales:

#1

https://backpack.tf/profiles/76561198212703000#!/compare/1730505600/1730592000

https://backpack.tf/profiles/76561198040965652#!/compare/1730419200/1730505600

https://backpack.tf/item/14851734549

Backpack buy

#2

https://backpack.tf/profiles/76561198271096393#!/compare/1729382400/1730332800

https://backpack.tf/profiles/76561198145908569#!/compare/1729209600/1730073600

https://backpack.tf/item/5374677733

Untraceable

https://backpack.tf/item/15057631052 - gambled

Marketplace Sales:

https://marketplace.tf/items/tf2/30840;5;u3183

https://backpack.tf/item/14851734549

$39.99, November 3rd

https://marketplace.tf/items/tf2/5021;6 - Keys were $1.88

39.99/1.88 = 21.271, rounds to 21

No current sellers.

Sales at:

14 (2x)

15

21

21 looks like a bit of an outlier, excluding 21.

Taking 14-15 keys.