Sale 1:

Sold for 32 keys

Seller: https://backpack.tf/profiles/76561198832639251#!/compare/1596672000/1596758400

Buyer: https://backpack.tf/profiles/76561198121191976#!/compare/1596585600/1596672000

https://backpack.tf/item/6201250300

https://i.imgur.com/7reHtuC.png - bot.tf confirms

32 keys

Sale 2:

Sold for 29 keys + some metal

Seller: https://backpack.tf/profiles/76561198104037014#!/compare/1598832000/1599004800

Buyer: https://backpack.tf/profiles/76561198337734785#!/compare/1598918400/1599004800

https://backpack.tf/item/193666936

29 keys

Sale 3:

Sold to a buy order for 28 keys + some metal

Seller: https://backpack.tf/profiles/76561198267189538#!/compare/1594080000/1594166400

Buyer: https://backpack.tf/profiles/76561198335791307#!/compare/1594080000/1594166400

https://backpack.tf/item/283068498

https://i.imgur.com/7reHtuC.png - bot.tf confirms

28 keys

Marketplace Sales:

https://marketplace.tf/items/tf2/102;5;u17

$74.99, June 21st

$74.99, July 21st

$74.99, August 11th

$40.80, August 26th

$74.99, August 31st

$40.80 would've gone to a buy order and is way below quickbuyers. Excluding $40.80.

http://manic.tf/keyprice?at=2020-06-21&price=74.99 - $74.99 / $1.99 = 37.68 keys

http://manic.tf/keyprice?at=2020-07-21&price=74.99 - $74.99 / $1.95 = 38.46 keys

http://manic.tf/keyprice?at=2020-08-11&price=74.99 - $74.99 / $1.84 = 40.76 keys

http://manic.tf/keyprice?at=2020-08-31&price=74.99 - $74.99 / $1.86 = 40.32 keys

https://backpack.tf/item/283068498 - June 21st

https://bot.tf/stats/listings/MLVO117G - B/O of 40

https://backpack.tf/item/193666936 - August 11th, no B/O

Couldn't find other histories.

After rounding, we have:

38 keys (2x)

41 keys

Other Sales:

https://backpack.tf/item/6201250300 (#1-3)

https://backpack.tf/item/4147194267 (#4 & #5)

https://backpack.tf/item/283068498 (#6) - skipped past the gambling

https://backpack.tf/item/193666936 (#7)

#1

Untraceable

https://backpack.tf/profiles/76561198121191976#!/compare/1596931200/1597017600

https://backpack.tf/profiles/76561198026726254#!/compare/1574035200/1597017600

Looks like it went for 33 keys, then re-sold before being scanned. Can't confirm anything.

#2

Sold with 10 keys for Cloud 9 Law

https://backpack.tf/profiles/76561198026726254#!/compare/1597017600/1597104000

https://backpack.tf/profiles/76561198429062799#!/compare/1597017600/1597104000

#3

Sold with some keys for an unpriced unusual weapon

https://backpack.tf/profiles/76561198429062799#!/compare/1597104000/1597190400

https://backpack.tf/profiles/76561198168863803#!/compare/1597104000/1597190400

Can be used on that weapon.

#4

Untraceable

https://backpack.tf/profiles/76561198043147463#!/compare/1592352000/1592438400

https://backpack.tf/profiles/76561198152838622#!/compare/1594684800/1596758400

#5

Untraceable

https://backpack.tf/profiles/76561198152838622#!/compare/1598400000/1598486400

https://backpack.tf/profiles/76561198152648165#!/compare/1598313600/1598400000

#6

Untraceable

https://backpack.tf/profiles/76561198799983169#!/compare/1593648000/1593734400

https://backpack.tf/profiles/76561198267189538#!/compare/1593648000/1593734400

#7

Untraceable

https://backpack.tf/profiles/76561198156083411#!/compare/1598313600/1598400000

https://backpack.tf/profiles/76561198104037014#!/compare/1598659200/1598832000

Probably sold on marketplace. Couldn't find a B/O for it to cap at if it were marketplace.

Sellers:

https://i.imgur.com/nW3LnDR.png

https://backpack.tf/item/6201250300 - 39 keys

https://backpack.tf/item/1282691696 - 39 keys

https://backpack.tf/item/283068498 - 40 keys

https://backpack.tf/item/9157375377 - 40 keys

Sales at:

28

29

32

38 (2x)

40

41

Multiple sellers at 40 and under, Bender has been unsold for about 2 months at 40. Excluding 40 and 41.

Buyers up to 29 keys, excluding 28 and 29.

Taking 32-38