Resuggestion, thanks to K1ng & Shuffle for the info!

Sale 1:

https://backpack.tf/profiles/76561198091696769#!/compare/1549065600/1549497600

https://backpack.tf/profiles/76561198364475021#!/compare/1548028800/1549065600

Sold with Grail Drongo for WW Isotope Butcher GL

Use there

Sale 2:

https://backpack.tf/profiles/76561198364475021#!/compare/1549843200/1549929600

https://backpack.tf/profiles/76561198209640976#!/compare/1549756800/1549929600

Bulk

Sale 3:

https://backpack.tf/profiles/76561198209640976#!/compare/1550188800/1550275200

https://backpack.tf/profiles/76561198306645854#!/compare/1550188800/1550275200

Sold with 11 keys for Blizzardy Dapper(33.5)

Total is 22.5 keys

Sale 4:

https://backpack.tf/profiles/76561198306645854#!/compare/1550793600/1550880000

https://backpack.tf/profiles/76561198309237889#!/compare/1550448000/1550880000

Sold for Brain Drain Motif + 4 keys

Motif Mini:

https://backpack.tf/suggestion/5cb01a27d381723f5167b4a6

Suggestion for 24 keys

Total is 28 keys

Sale 5:

https://backpack.tf/profiles/76561198309237889#!/compare/1550448000/1550880000

https://backpack.tf/profiles/76561198208761289#!/compare/1550966400/1551484800

https://backpack.tf/profiles/76561198367602222#!/compare/1550793600/1550880000

Untrace

Sale 6:

https://marketplace.tf/items/981;5;u33

Both were duped sales.

Shuffle's Part:

https://backpack.tf/profiles/76561198116164243#!/compare/1556409600/1556496000 - Sold for 25 to a buyer.

Duped sales can be used if they average out higher than clean sales. In this case, though, $72 is a high outlier regardless.

K1ng's Part:

A Genuine PKS Original was also added with the Dapper in sale 3, so it will be ~31 keys. One of the mp.tf sales is ~38 and the other is capped at 38 as well (still listed in classies).

Other sale (credits to Cashew):

https://backpack.tf/profiles/76561198208861321#!/compare/1555200000/1555286400 ----- ~27 keys (seller got banned 5 days ago)

So there are sales at 25 (qs), 27, 28, 31, 38, 38. 27-38 should be okay.