History 1: https://backpack.tf/item/9154224811

bulk

https://backpack.tf/profiles/76561198082036109#!/compare/1600300800/1604448000

https://backpack.tf/profiles/76561198101062081#!/compare/1604361600/1604448000

Marketplace.tf sale

Sold for an Aces High Data Mining Light

https://backpack.tf/profiles/76561199041279161#!/compare/1605657600/1605744000

https://backpack.tf/profiles/76561198062747535#!/compare/1605657600/1605744000

(recent sale at 11.36 keys, should fall in-range https://marketplace.tf/items/tf2/30051;5;u59)

untraceable:

https://backpack.tf/profiles/76561198062747535#!/compare/1607385600/1607472000

https://backpack.tf/profiles/76561198037296831#!/compare/1607385600/1607472000

History 2: https://backpack.tf/item/9058293108

Marketplace.tf sale

History 3: https://backpack.tf/item/8340807835

Traded before it was unusualified:

https://backpack.tf/profiles/76561198134214128#!/compare/1604880000/1604966400

History 4: https://backpack.tf/item/7201729547

before it was unusualified

https://backpack.tf/profiles/76561198328980949#!/compare/1609804800/1610323200

before it was unusualified

https://backpack.tf/profiles/76561198850178158#!/compare/1609718400/1609804800

before it was unusualified:

https://backpack.tf/profiles/76561199104298973#!/compare/1610064000/1610150400

only 4 keys match:

https://backpack.tf/profiles/76561198182549022#!/compare/1610236800/1610582400

https://backpack.tf/profiles/76561198031394373#!/compare/1609891200/1610668800

History 5: https://backpack.tf/item/6872920272

Tradebacks

Bulk:

https://backpack.tf/profiles/76561198061779536#!/compare/1609113600/1609200000

https://backpack.tf/profiles/76561199030966484#!/compare/1608163200/1609200000

History 6: https://backpack.tf/item/6261814672

Marketplace.tf sale

Marketplace.tf sales: https://marketplace.tf/items/tf2/30842;5;u3004

December 12: $17.95/1.89=9.5 keys ~10 keys

December 18: $17.95/2.01=8.93 keys ~9 keys

December 24: $26.9/2.1=12.81 keys ~13 keys

Median value of all the sales is over 10 keys so roundign to nearest whole number

Sales at 9, 10, 13, why not a range of 9-13 keys?