Sale 1:

Sold for 26 keys

https://backpack.tf/profiles/76561198074149928#!/compare/1751241600/1751328000 - Near ID: 15889853882

https://backpack.tf/profiles/76561198161627270#!/compare/1751328000/1752192000

https://backpack.tf/item/13676261095

= 26 keys

Sale 2:

Sold for 22 keys

https://backpack.tf/profiles/76561199026390261#!/compare/1749859200/1749945600

https://backpack.tf/profiles/76561198161980756#!/compare/1749859200/1749945600

https://backpack.tf/item/13701425095

= 22 keys

Marketplace Sales:

https://marketplace.tf/items/tf2/31391;5;u308

$66.99, May 24th

$39.99, July 6th

https://marketplace.tf/items/tf2/5021;6 - keys were:

$1.92, May 24th

$2.04, July 6th

66.99/1.92 = 34.891, rounds to 35 keys

39.99/2.04 = 19.603, rounds to 20 keys

Other Sales:

#1

https://backpack.tf/profiles/76561198079344831#!/compare/1748822400/1749600000 - won’t update

https://backpack.tf/profiles/76561199059632349#!/compare/1749513600/1749600000

https://backpack.tf/item/13638142486

Bulk

#2

https://backpack.tf/profiles/76561198056065060#!/compare/1749686400/1751846400

https://backpack.tf/profiles/76561198076727370#!/compare/1734393600/1752105600

https://backpack.tf/item/13643274682

Untraceable

#3

https://backpack.tf/profiles/76561198066743294#!/compare/1751068800/1751155200

https://backpack.tf/profiles/76561199097268184#!/compare/1751155200/1752192000

https://backpack.tf/item/13659395739

Untraceable

#4

https://backpack.tf/profiles/76561198208327832#!/compare/1749600000/1749686400

https://backpack.tf/profiles/76561199026390261#!/compare/1749600000/1749686400

https://backpack.tf/item/13701425095

Untraceable

#5

https://backpack.tf/profiles/76561198085304366#!/compare/1752105600/1752192000

https://backpack.tf/profiles/76561199620388738#!/compare/1752105600/1752192000

https://backpack.tf/item/13701425095

Untraceable, some keys match on the buyer’s end

#6

https://backpack.tf/profiles/76561198161980756#!/compare/1750032000/1750118400

https://backpack.tf/profiles/76561198085304366#!/compare/1750032000/1750118400

https://backpack.tf/item/13701425095

Untraceable

#7

https://backpack.tf/profiles/76561198090828730#!/compare/1754265600/1754784000

https://backpack.tf/profiles/76561199132184792#!/compare/1754697600/1754784000 - won’t update

https://backpack.tf/item/16029538456 (currently unavailable, waiting for backpack update)

https://gladiator.tf/sales?item=Nightmarish%20Storm%20Thunder%20Dome&at=2025-08-10T16:53:52.544Z - labelled as 21 keys + 1.33 ref

1.33 ref matches. Given buyers at this price, it won’t matter if I include it or not.

Sellers:

https://i.imgur.com/8yqPjtX.png

https://backpack.tf/item/13701425095 - ~29.5 keys

https://backpack.tf/item/13638142486 - ~29.5 keys

https://backpack.tf/item/13700538034 - 30 keys

https://backpack.tf/item/13788731625 - 35 keys

https://backpack.tf/item/14192145833 - $66.99

https://backpack.tf/item/13693796992 - $66.99

https://backpack.tf/item/14183297139 - $66.99

https://backpack.tf/item/14323449511 - $66.99

https://backpack.tf/item/13666637155 - $66.99

Highest buyer at ~21 keys

Sales at:

20 (marketplace)

22

26

35 (marketplace)

35 is an outlier countered by sellers, excluding 35.

Buyers at 21, excluding 20.

Taking 22-26 keys.