Sale 1:

https://backpack.tf/profiles/76561198093892890#!/compare/1550793600/1551225600

https://backpack.tf/profiles/76561198312583107#!/compare/1551139200/1551225600

Untrace

Sale 2:

https://backpack.tf/profiles/76561198312583107#!/compare/1556841600/1556928000

https://backpack.tf/profiles/76561198078240812#!/compare/1556841600/1556928000

Untrace

Sale 3:

https://backpack.tf/profiles/76561197994660517#!/compare/1549324800/1549411200

https://backpack.tf/profiles/76561198061440669#!/compare/1549238400/1549411200

Bulk

Sale 4:

https://backpack.tf/profiles/76561198801034142#!/compare/1555200000/1555372800

https://backpack.tf/profiles/76561198264117106#!/compare/1555286400/1555372800

Bulk

Sale 5:

https://backpack.tf/profiles/76561198264117106#!/compare/1555286400/1555372800

https://backpack.tf/profiles/76561198101092551#!/compare/1555200000/1555372800

Sold for 13 keys

Sale 6:

https://backpack.tf/profiles/76561198101092551#!/compare/1555372800/1555459200

https://backpack.tf/profiles/76561198068681186#!/compare/1555372800/1555459200

Sold for Planets Company Mann

Use there

Sale 7:

https://backpack.tf/profiles/76561198068681186#!/compare/1555372800/1555459200

https://backpack.tf/profiles/76561198199244659#!/compare/1555372800/1555459200

Sold for 13 keys

Sale 8:

https://backpack.tf/profiles/76561198199244659#!/compare/1555372800/1555459200

https://backpack.tf/profiles/76561198173519105#!/compare/1555372800/1555459200

Sold for ~16 keys

Sale 9:

https://backpack.tf/profiles/76561198173519105#!/compare/1555804800/1555891200

https://backpack.tf/profiles/76561198252999692#!/compare/1555804800/1555891200

https://backpack.tf/profiles/76561198346618977#!/compare/1555804800/1555891200

Bulk / untrace

Sale 10:

https://backpack.tf/profiles/76561198346618977#!/compare/1555891200/1555977600

https://backpack.tf/profiles/76561198069591430#!/compare/1555718400/1555977600

Sold for 14 keys

Sale 11:

https://backpack.tf/profiles/76561198132735606#!/compare/1551571200/1552089600

https://backpack.tf/profiles/76561198841365001#!/compare/1551916800/1552003200

Untrace

Sale 12:

https://backpack.tf/profiles/76561198830633436#!/compare/1553558400/1553644800

https://backpack.tf/profiles/76561198133691426#!/compare/1553558400/1553644800

Untrace

Sale 13:

https://backpack.tf/profiles/76561198133691426#!/compare/1553644800/1553731200

https://backpack.tf/profiles/76561198086087727#!/compare/1553644800/1553731200

Sold for C9 Hedge

Hedge Mini:

https://backpack.tf/suggestion/5ccfcb4b6780720a882eed4f

Suggestion for 13 keys

Sale 14:

https://backpack.tf/profiles/76561198086087727#!/compare/1553817600/1553904000

https://backpack.tf/profiles/76561198060548925#!/compare/1553817600/1553904000

Sold for Blizzardy Bone Dome

sale 15:

https://backpack.tf/profiles/76561198060548925#!/compare/1553904000/1553990400

https://backpack.tf/profiles/76561198313393132#!/compare/1553904000/1553990400

Sold for Steaming Scrap

Use there

Sale 16:

https://backpack.tf/profiles/76561198313393132#!/compare/1553904000/1553990400

https://backpack.tf/profiles/76561198046102461#!/compare/1553904000/1553990400

Sold with ~2 key in sweets for CPS Whoopee(17.5)

Total is 15.5 keys

Sale 17:

https://backpack.tf/profiles/76561198046102461#!/compare/1553990400/1554076800

https://backpack.tf/profiles/76561198020054731#!/compare/1552262400/1554076800

Sold for 17 keys

Sale 18:

https://marketplace.tf/items/31003;5;u117

$50.00 / $1.77 = 28.25 keys

Total sales @:

13, 13, 13, 14, 15.5, 16, 17, 28.25 keys

poorly bumped seller for 16,

only one buyer at 13 keys,

Taking 13 - 17 keys