https://marketplace.tf/items/tf2/30066;5;u35

https://backpack.tf/item/7156765724

$71.99 / $1.71 = 42.10 keys

https://backpack.tf/profiles/76561198088409405#!/compare/1583539200/1583625600

https://backpack.tf/profiles/76561198228991628#!/compare/1583366400/1583625600

bulk

https://backpack.tf/profiles/76561198228991628#!/compare/1583625600/1584144000

https://backpack.tf/profiles/76561198168863803#!/compare/1583539200/1583625600

untraceable

https://backpack.tf/profiles/76561198337734785#!/compare/1586995200/1587081600

https://backpack.tf/profiles/76561198247522696#!/compare/1586390400/1587168000

untraceable

https://backpack.tf/profiles/76561198247522696#!/compare/1588809600/1591315200

https://backpack.tf/profiles/76561198017911489#!/compare/1588809600/1588896000

terror watt hong kong cone (30 keys) https://backpack.tf/suggestion/5ebb5da9e1a09d71a46ac3c5

https://backpack.tf/profiles/76561198017911489#!/compare/1588982400/1589068800

https://backpack.tf/profiles/76561198123224716#!/compare/1588982400/1589068800

bulk

https://backpack.tf/profiles/76561198123224716#!/compare/1588982400/1589068800

https://backpack.tf/profiles/76561198114402400#!/compare/1588982400/1589068800

untraceable

i think its 29 keys though but id/histories don't match

https://backpack.tf/profiles/76561198114402400#!/compare/1590796800/1590883200

https://backpack.tf/profiles/76561198149688904#!/compare/1590364800/1590883200

untraceable

https://backpack.tf/profiles/76561198273129808#!/compare/1589328000/1589414400

https://backpack.tf/profiles/76561198859832739#!/compare/1589328000/1589414400

untraceable, only 5 keys matches

https://backpack.tf/profiles/76561198859832739#!/compare/1589500800/1589587200

https://backpack.tf/profiles/76561198395511763#!/compare/1589500800/1589587200

20 keys, low

https://backpack.tf/profiles/76561198395511763#!/compare/1589846400/1589932800

https://backpack.tf/profiles/76561198388363768#!/compare/1589846400/1589932800

purple energy tam o shanter, using there

https://backpack.tf/profiles/76561198388363768#!/compare/1589932800/1590019200

https://backpack.tf/profiles/76561198099018071#!/compare/1589846400/1589932800

its all the keys leaving the 2nd compare, which is 27 keys

https://backpack.tf/profiles/76561198099018071#!/compare/1590019200/1590105600

https://backpack.tf/profiles/76561198131551260#!/compare/1590105600/1590192000

26 keys

https://backpack.tf/profiles/76561198131551260#!/compare/1590192000/1591228800

27 keys

sellers:

https://gyazo.com/e247025f3fdfb159d5930368923b26a4

32 - 2 months

35 - 3 months

buyers:

25, 25, 24

sales:

26

27

27

29?

30

42

27 resold for 26, then 26 resold for 27 keys

going with 27-30 keys

as supporting evidence, if i used the purple energy tam o shanter here, that sale would equal around 25-29 keys.