Resuggestion, thanks to Xerogyf & Blaze for the info!

Sale 1:

https://backpack.tf/profiles/76561198185579770#!/compare/1589328000/1589414400

https://backpack.tf/profiles/76561198114402400#!/compare/1589328000/1589414400

Bulk

sale 2:

https://backpack.tf/profiles/76561198016691187#!/compare/1586908800/1587168000

https://backpack.tf/profiles/76561198049884052#!/compare/1587600000/1587772800

Untrace/ Bulk

sale 3:

https://backpack.tf/profiles/76561198049884052#!/compare/1589241600/1589414400

https://backpack.tf/profiles/76561198050582650#!/compare/1589241600/1589328000

untrace

sale 4:

https://backpack.tf/profiles/76561198050582650#!/compare/1589241600/1589328000

https://backpack.tf/profiles/76561198849188503#!/compare/1589241600/1589328000

untrace

sale 5:

https://backpack.tf/profiles/76561198114301162#!/compare/1585785600/1589500800

https://backpack.tf/profiles/76561198085880346#!/compare/1589414400/1589500800

Sold for 37 keys

Sale 6:

https://backpack.tf/profiles/76561198110834357#!/compare/1582156800/1582243200

https://backpack.tf/profiles/76561198334946156#!/compare/1582156800/1582243200

Sold for keys

sale 7:

https://backpack.tf/profiles/76561198334946156#!/compare/1583884800/1583971200

https://backpack.tf/profiles/76561198090147535#!/compare/1583884800/1583971200

Bulk

sale 8:

https://backpack.tf/profiles/76561198090147535#!/compare/1588550400/1588723200

https://backpack.tf/profiles/76561197973696367#!/compare/1588636800/1588723200

Sold for 50 keys

sale 9:

https://backpack.tf/profiles/76561198367892937#!/compare/1587340800/1587427200

https://backpack.tf/profiles/76561199017926833#!/compare/1587427200/1587513600

https://backpack.tf/profiles/76561198092449612#!/compare/1587772800/1587427200

Untrace

sale 10:

https://backpack.tf/profiles/76561198068732040#!/compare/1588377600/1588464000

https://backpack.tf/profiles/76561198154477915#!/compare/1588464000/1588982400

Untrace

sale 11:

https://backpack.tf/profiles/76561198110834357#!/compare/1582070400/1582156800

https://backpack.tf/profiles/76561198122119323#!/compare/1582156800/1582243200

https://backpack.tf/profiles/76561198110834357#!/compare/1582156800/1582243200

tradeback(?)

Sale 12:

https://backpack.tf/profiles/76561198110834357#!/compare/1582243200/1582329600

https://backpack.tf/profiles/76561198374206487#!/compare/1582243200/1582329600

Sold for 29 keys

sale 13:

https://backpack.tf/profiles/76561198374206487#!/compare/1582329600/1582416000

https://backpack.tf/profiles/76561198314349856#!/compare/1582329600/1582416000

Sold for 29 keys

sale 14:

https://backpack.tf/profiles/76561198314349856#!/compare/1582329600/1582416000

https://backpack.tf/profiles/76561198046921199#!/compare/1582329600/1582416000

Sold with N&B Soldered + ~2 keys in sweets for PE Lucky

use there

https://bot.tf/stats/listings/Y8E3L9EN

B/O of 40 keys

sale 15:

https://backpack.tf/profiles/76561198046921199#!/compare/1582934400/1583020800

https://backpack.tf/profiles/76561198096559520#!/compare/1582502400/1583020800

Sold for 42 keys

Total sales @:

29, 29, 37, 42, 50 keys

buyers up to ~37 keys,

https://i.imgur.com/Mu4hZst.jpg

3 sellers at 45, 47, 50 keys....

Xerogyf’s Part:

New sales:

https://backpack.tf/profiles/76561198096856475#!/compare/1592352000/1592611200 Added 7 keys for a C9 Luchador (indate buy buyers at bp price)

Prob not usable

https://backpack.tf/profiles/76561198085880346#!/compare/1590883200/1590969600

40 keys 26 ref

round to 41

https://backpack.tf/profiles/76561198220121581#!/compare/1591142400/1591315200

Burning Ze Goggles (45, open suggestion, probably fine, see comment there) + 3 keys, no b/o

https://backpack.tf/suggestion/5ec8f55fe3e26b5ec26cdc8b

48

https://backpack.tf/profiles/76561198044157063#!/compare/1592697600/1592784000

bulk

https://backpack.tf/profiles/76561198129496130#!/compare/1592870400/1592956800

bulk

https://marketplace.tf/items/tf2/380;5;u29

https://backpack.tf/item/711953274

$60.65 / $2.00 = 30.32 keys

mp.tf buy order

With so many low sales + sellers at 40 and 44 rn id probably call 48 and 50 high and use the 41 as the low end and do 41-42

Blaze’s ParT:

given sellers and the additional information provided by Xergoyf, 37-42 could work here. i'd include 37 since there are so many lower sales as well