Resuggest: https://backpack.tf/suggestion/5eac82ff56bd603aff7a719b

Sale 1-18:

https://marketplace.tf/items/tf2/30177;5;u58

$57 / $1.78 = 32.02 keys

$80 / $1.77 = 45.20 keys // https://backpack.tf/item/7956216945

$45.1 / $1.77 = 25.48 keys

$75 / $1.75 = 42.86 keys

$75 / $1.75 = 42.86 keys // https://backpack.tf/item/7388992965

$44.44 / $1.76 = 25.25 keys

$46.01 / $1.75 = 26.29 keys

$74.99 / $1.73 = 43.35 keys

$74.99 / $1.71 = 43.85 keys

$79.99 / $1.69 = 47.33 keys

$46.12 / $1.68 = 27.45 keys

$79.99 / $1.68 = 47.61 keys

$79.99 / $1.69 = 47.33 keys

$62.99 / $1.69 = 37.27 keys

$59.99 / $1.69 = 35.50 keys

$79.99 / $1.75 = 45.71 keys

$80 / $1.77 = 45.20 keys

$85.84 / $1.77 = 48.50 keys

Sale 19:

bulk

https://backpack.tf/profiles/76561198304302520#!/compare/1581033600/1581120000

https://backpack.tf/profiles/76561198078270935#!/compare/1581033600/1581120000

Sale 20:

untrace

https://backpack.tf/profiles/76561198304302520#!/compare/1581292800/1581379200

https://backpack.tf/profiles/76561198402985446#!/compare/1581206400/1581465600

Sale 21:

untrace

https://backpack.tf/profiles/76561198402985446#!/compare/1581206400/1581465600

https://backpack.tf/profiles/76561198141187659#!/compare/1581379200/1581465600

Sale 22:

untrace

https://backpack.tf/profiles/76561198142873343#!/compare/1564099200/1581552000

https://backpack.tf/profiles/76561198141187659#!/compare/1581379200/1581465600

Sale 23:

untrace - possibly MP

https://backpack.tf/profiles/76561198863393935#!/compare/1583712000/1586563200

https://backpack.tf/profiles/76561198441134872#!/compare/1584576000/1585008000

Sale 24:

28 keys

https://backpack.tf/profiles/76561198197769685#!/compare/1578614400/1584921600

https://backpack.tf/profiles/76561198131081286#!/compare/1584835200/1584921600

Sale 25:

bulk

sold with Vivid Cold Killer + CPS Minnesota Slick for miami nights crones dome + 5 keys

https://backpack.tf/profiles/76561198131081286#!/compare/1585008000/1585094400

https://backpack.tf/profiles/76561198145718102#!/compare/1585008000/1585094400

Sale 26:

bulk for beams DCO

https://backpack.tf/profiles/76561198145718102#!/compare/1585094400/1585180800

https://backpack.tf/profiles/76561198972294135#!/compare/1585094400/1585180800

Sale 27:

sold with 6 keys for Blizzardy Hot Dogger(14.5) + DBD Condor Cap

https://backpack.tf/profiles/76561198343428818#!/compare/1585094400/1585180800

https://backpack.tf/profiles/76561198056974324#!/compare/1585094400/1585180800

Sale 28:

bulk

https://backpack.tf/profiles/76561198056974324#!/compare/1585353600/1585440000

https://backpack.tf/profiles/76561198053720151#!/compare/1585353600/1585440000

Sale 29:

32 keys

https://backpack.tf/profiles/76561198053720151#!/compare/1585353600/1585440000

https://backpack.tf/profiles/76561198358296372#!/compare/1585353600/1585440000

Sale 30:

untrace

https://backpack.tf/profiles/76561198358296372#!/compare/1586131200/1586217600

https://backpack.tf/profiles/76561198172840425#!/compare/1573862400/1586217600

Sale 31:

untrace

https://backpack.tf/profiles/76561198227156248#!/compare/1586563200/1587081600

https://backpack.tf/profiles/76561198122796000#!/compare/1586476800/1586649600

Sale 32:

untrace

https://backpack.tf/profiles/76561198349759493#!/compare/1586736000/1586908800

https://backpack.tf/profiles/76561198122796000#!/compare/1586649600/1586822400

Sale 33:

untrace

https://backpack.tf/profiles/76561198349759493#!/compare/1586908800/1586995200

https://backpack.tf/profiles/76561198084076765#!/compare/1553472000/1587859200

Sale 34:

untrace

https://backpack.tf/profiles/76561198125325315#!/compare/1582416000/1587859200

https://backpack.tf/profiles/76561198864285626#!/compare/1586476800/1586563200

Sale 35:

untrace

https://backpack.tf/profiles/76561198305494036#!/compare/1586563200/1586649600

https://backpack.tf/profiles/76561198864285626#!/compare/1586563200/1586649600

Sale 36:

untrace

https://backpack.tf/profiles/76561198305494036#!/compare/1586563200/1586649600

https://backpack.tf/profiles/76561198065112592#!/compare/1586736000/1587081600

Sale 37:

very low

Open Mind Mann-O-War + Professional Killstreak Batsaber + small sweets

https://backpack.tf/profiles/76561198408606810#!/compare/1581292800/1581379200

https://backpack.tf/profiles/76561199014713700#!/compare/1580601600/1581379200

Sale 38:

using on rotation

strange stormy rotation + Pro strange RL(16)

https://backpack.tf/profiles/76561198408606810#!/compare/1586044800/1586131200

https://backpack.tf/profiles/76561198868740200#!/compare/1585526400/1586476800

RL: https://imgur.com/a/XBHqDEB

Sale 39:

39 keys

https://backpack.tf/profiles/76561198868740200#!/compare/1587427200/1588291200

https://backpack.tf/profiles/76561198084367252#!/compare/1588204800/1588291200

Sale 40:

https://marketplace.tf/items/tf2/30177;5;u58

$80 / $1.88 = 42.55 keys

Sale 41:

untrace - prob QS

https://backpack.tf/profiles/76561198005062648#!/compare/1582243200/1589241600

https://backpack.tf/profiles/76561198267189538#!/compare/1589155200/1589241600

Sale 42:

untrace - prob QS

https://backpack.tf/profiles/76561198391438073#!/compare/1588723200/1589673600

https://backpack.tf/profiles/76561198305494036#!/compare/1588636800/1588723200

Sale 43:

34 keys + 7 ref

https://backpack.tf/profiles/76561198305494036#!/compare/1588723200/1588809600

https://backpack.tf/profiles/76561198223429284#!/compare/1588636800/1588896000

=======================================================================

sales:

25,25,26,27,28,32,32,34,35,37,39,43,43,43,43,44,45,45,46,47,47,48,49