The Sale:

Sold for 12 keys (IDs match)

Seller: https://backpack.tf/profiles/76561198335791307#!/compare/1586044800/1586131200

Buyer: https://backpack.tf/profiles/76561198867626964#!/compare/1586131200/1586217600

https://backpack.tf/item/7959941715

https://i.imgur.com/qpA6VPH.png - bot.tf confirms

12 keys

Marketplace Sales:

https://marketplace.tf/items/tf2/31041;5;u16

$18.99, Jan 26th

$25.99, Feb 5th

$21.99, March 11th

https://backpack.tf/item/7959941715 - Jan 26th

https://bot.tf/stats/listings/MQ9N699Q - B/O of 15

http://manic.tf/keyprice?at=2020-01-26&price=18.99 - $18.99 / $1.78 = 10.67 keys

https://backpack.tf/item/7979115256 - March 11th

https://bot.tf/stats/listings/MLRWXV6J - B/O of 12

http://manic.tf/keyprice?at=2020-03-11&price=21.99 - $21.99 / $1.72 = 12.78 keys

Caps at 12

Can’t find the last history

http://manic.tf/keyprice?at=2020-02-05&price=25.99 - $25.99 / $1.77 = 14.68 keys

https://bot.tf/stats/listings/MXQ66XW6 - No important B/Os (the 12 key seller is the marketplace sale above)

After rounding, we have:

12 keys (B/O cap)

15 keys

Other Sales:

https://backpack.tf/item/7983364307 (#1-3)

https://backpack.tf/item/7979115256 (#4)

https://backpack.tf/item/7959941715 (#5)

#1

Bulk for pure

https://backpack.tf/profiles/76561198108797381#!/compare/1584230400/1584316800

https://backpack.tf/profiles/76561198057412106#!/compare/1584230400/1584316800

#2

Untraceable

https://backpack.tf/profiles/76561198261763109#!/compare/1584576000/1584662400

https://backpack.tf/profiles/76561198311498888#!/compare/1584489600/1584576000

#3

Sold for Kill-a-Watt Whoopee Cap

https://backpack.tf/profiles/76561198057412106#!/compare/1584403200/1584489600

https://backpack.tf/profiles/76561198261763109#!/compare/1584403200/1584489600

https://bot.tf/stats/listings/4R0GG9LK - B/O of 12

Will fit in the range if used here, most likely. Can be used to update the Whoopee.

#4

Bulk for Terror-Watt Ground Control

https://backpack.tf/profiles/76561198068505495#!/compare/1587081600/1587168000

https://backpack.tf/profiles/76561198068505495#!/compare/1587081600/1587168000

Using on the Ground Control

#5

Sold for 6 keys + 8 ref?

https://backpack.tf/profiles/76561198087947269#!/compare/1580774400/1581120000

https://backpack.tf/profiles/76561198335791307#!/compare/1581033600/1581120000

https://i.imgur.com/qpA6VPH.png - Labelled as 7 keys + 10 ref

Would be a low outlier anyways.

Sellers/Buyers:

https://i.imgur.com/4e0y91H.png

https://backpack.tf/item/7961433821 - 14 keys

https://backpack.tf/item/7979115256 - 14 keys

Buyers at ~7.3 keys

Sales at:

11

12 (2x)

15

15 is higher than the sellers at 14. Excluding 15.

Taking 11-12.