https://marketplace.tf/items/tf2/984;5;u33

Jan 3 - $59.99 / $2.11 = 28.43 keys

Feb 23 - $59.99 / $2.13 = 28.16 keys

Mar 5 - $59.99 / $2.18 = 27.52 keys

Mar 17 - $64.99 / $2.19 = 29.68 keys

Mar 21 - $69.99 / $2.19 = 31.96 keys

https://backpack.tf/item/2902811601

https://backpack.tf/item/9716404532

https://backpack.tf/profiles/76561198106255568#!/compare/1612742400/1612828800

https://backpack.tf/profiles/76561198151432024#!/compare/1612742400/1612828800

Untraceable

https://backpack.tf/profiles/76561198151432024#!/compare/1612828800/1612915200

https://backpack.tf/profiles/76561197982127154#!/compare/1612828800/1612915200

Untraceable

https://backpack.tf/profiles/76561197982127154#!/compare/1612915200/1613001600

https://backpack.tf/profiles/76561199006971039#!/compare/1612915200/1613001600

Bulk

https://backpack.tf/profiles/76561198405168492#!/compare/1615939200/1616630400

https://backpack.tf/profiles/76561198982631429#!/compare/1616112000/1616371200

Untraceable

https://backpack.tf/profiles/76561198982631429#!/compare/1616544000/1616630400

https://backpack.tf/profiles/76561198140316312#!/compare/1616544000/1616630400

Untraceable

https://backpack.tf/profiles/76561198139370347#!/compare/1609113600/1609200000

https://backpack.tf/profiles/76561198222438340#!/compare/1609113600/1609459200

Marketplace sale

https://backpack.tf/profiles/76561198067130601#!/compare/1603843200/1611100800

https://backpack.tf/profiles/76561199046064612#!/compare/1611014400/1611100800

Only like 7.5 keys matches

https://backpack.tf/profiles/76561199046064612#!/compare/1611014400/1611100800

https://backpack.tf/profiles/76561198198091931#!/compare/1611014400/1611100800

Untraceable

https://backpack.tf/profiles/76561198198091931#!/compare/1611014400/1611100800

https://backpack.tf/profiles/76561198115594676#!/compare/1610928000/1611100800

the muffs + PE doctor sack for 47 keys

not using

https://backpack.tf/profiles/76561198032392742#!/compare/1610755200/1616630400

https://backpack.tf/profiles/76561198074303984#!/compare/1508457600/1611878400

Untraceable SCM

https://backpack.tf/profiles/76561199100160026#!/compare/1610928000/1611187200

https://backpack.tf/profiles/76561199107756170#!/compare/1607904000/1611014400

https://gladiator.tf/listings/60021c8e176ab17f40c61fc0

Most likely 25 keys which was the buyout, but keys don't match

https://backpack.tf/profiles/76561198002757046#!/compare/1610668800/1610755200

https://backpack.tf/profiles/76561198091337544#!/compare/1610755200/1610841600

https://gladiator.tf/listings/60021c8e176ab17f40c61fc0

21 keys and 25 refined, which was the buyout

https://backpack.tf/profiles/76561198091337544#!/compare/1610841600/1616630400

https://backpack.tf/profiles/76561198888086377#!/compare/1610755200/1610928000

Untraceable

https://backpack.tf/profiles/76561198198091931#!/compare/1613174400/1613260800

https://backpack.tf/profiles/76561198118621402#!/compare/1613088000/1613174400

22 keys and 19 refined

https://backpack.tf/profiles/76561198118621402#!/compare/1613174400/1613260800

https://backpack.tf/profiles/76561198191317310#!/compare/1613174400/1613260800

13 keys and 35 refined matches

https://backpack.tf/profiles/76561198191317310#!/compare/1613174400/1613260800

https://backpack.tf/profiles/76561198191317310#!/compare/1613174400/1613260800

Untraceable

https://backpack.tf/profiles/76561198063274978#!/compare/1613001600/1613260800

https://backpack.tf/profiles/76561198200010261#!/compare/1613174400/1613260800

Untraceable

https://backpack.tf/profiles/76561198200010261#!/compare/1613260800/1613347200

https://backpack.tf/profiles/76561198048250022#!/compare/1613088000/1613347200

It looks like 24 keys and 15 refined, but histories don't match

https://backpack.tf/profiles/76561198048250022#!/compare/1613347200/1613433600

https://backpack.tf/profiles/76561197963500354#!/compare/1613347200/1613433600

Untraceable

https://backpack.tf/profiles/76561197963500354#!/compare/1616025600/1616112000

https://backpack.tf/profiles/76561199006971039#!/compare/1616025600/1616112000

Untraceable

https://backpack.tf/profiles/76561199006971039#!/compare/1616025600/1616112000

https://backpack.tf/profiles/76561198091502579#!/compare/1616025600/1615939200

Untraceable

Sales:

21.5

22.5

24.5?

25?

28

28

28

30

32

There is support on both ends low and high for this item

https://gyazo.com/f6629be1a5a0a68d1968863d3527db3c

Buyers to 21 keys

Going with 23-28, cutting off parts of the end just to tighten the range