https://marketplace.tf/items/tf2/48;5;u19

$68 = 38 keys (quicksell price)

$109.99 = 61 keys https://backpack.tf/item/282273000 no buyout was found

$99.99 = 56 keys https://backpack.tf/item/263670925 50 key buyout https://bot.tf/stats/listings/Y7DJ7VDK

https://backpack.tf/profiles/76561198331167728#!/compare/1572307200/1572393600

https://backpack.tf/profiles/76561197993987295#!/compare/1572048000/1572393600

Using there, went with ~20 keys mixed for Haunted Ghosts Mining Light

https://backpack.tf/profiles/76561198140565712#!/compare/1572307200/1572393600

https://backpack.tf/profiles/76561198014728963#!/compare/1572307200/1572393600

Bulk

https://backpack.tf/profiles/76561198108020471#!/compare/1568764800/1568937600

https://backpack.tf/profiles/76561198120672630#!/compare/1568851200/1568937600

Bulk

https://backpack.tf/profiles/76561198061440669#!/compare/1565740800/1565827200

https://backpack.tf/profiles/76561198055617854#!/compare/1565740800/1565827200

40 keys (quickbuyers currently at 38 keys)

https://backpack.tf/profiles/76561198331167728#!/compare/1571356800/1571443200

https://backpack.tf/profiles/76561198120672630#!/compare/1571356800/1571443200

Seems kinda bulky

https://backpack.tf/profiles/76561198819747735#!/compare/1569715200/1569801600

https://backpack.tf/profiles/76561198120672630#!/compare/1569715200/1569801600

https://backpack.tf/profiles/76561198120672630#!/compare/1569888000/1570060800

https://backpack.tf/item/282273000

some tradeback shenanigans, i can't exactly tell what's going on

https://backpack.tf/profiles/76561198030220946#!/compare/1565913600/1566518400

https://backpack.tf/profiles/76561198042694990#!/compare/1566518400/1567468800

I don't know

https://backpack.tf/profiles/76561198042694990#!/compare/1567900800/1568073600

https://backpack.tf/profiles/76561198054776727#!/compare/1570233600/1570752000

https://steamcommunity.com/market/listings/440/Unusual%20Mining%20Light

October 10 SCM - $113.85 = 47 keys

https://backpack.tf/profiles/76561198014728963#!/compare/1571529600/1571616000

https://backpack.tf/profiles/76561198054776727#!/compare/1570752000/1571011200

Untraceable

Sales:

40

47

50

61

Sellers:

https://gyazo.com/2b96373723cf95e38c85af5cb4c5887b

Many under 60 keys and under 50 keys as well.

Buyers close to 40 keys pure, but has been unsold for 50 every since it was purchased for 40.

Going with 40-50 keys.