https://backpack.tf/profiles/76561199019427074#!/compare/1597449600/1597536000

https://backpack.tf/profiles/76561198269337198#!/compare/1597449600/1597536000

Sold for Pro KS Aussie Scater(~51)

https://bot.tf/stats/listings/4O9E8Z8V

https://backpack.tf/profiles/76561198850121720#!/compare/1597881600/1597968000

https://backpack.tf/profiles/76561198087099341#!/compare/1597881600/1597968000

Sold for ~55 keys

https://backpack.tf/profiles/76561198087099341#!/compare/1598832000/1598918400

https://backpack.tf/profiles/76561198081300840#!/compare/1598745600/1600300800

Sold for 69 keys

https://backpack.tf/profiles/76561198081300840#!/compare/1598745600/1600300800

https://backpack.tf/profiles/76561198168657333#!/compare/1599955200/1600041600

Sold for 73 keys

https://backpack.tf/profiles/76561198168657333#!/compare/1600214400/1600387200

https://backpack.tf/profiles/76561198002757046#!/compare/1600214400/1600387200

QS

https://backpack.tf/profiles/76561198002757046#!/compare/1601337600/1601424000

https://backpack.tf/profiles/76561198155489173#!/compare/1601337600/1601424000

https://bot.tf/stats/listings/4J5R35PV

the 57 key sale seems unlikely; it would mean Rubi sold for under buy orders. It's more likely the Iron bomber was sold for keys which were used as well; Though I'm unable to trace an exact amount.

https://backpack.tf/profiles/76561198155489173#!/compare/1601424000/1601510400

https://backpack.tf/profiles/76561198859721638#!/compare/1601424000/1601510400

https://bot.tf/stats/listings/420DX7RV

The Shellmet sale has a Buyout of 85 keys, so it would need to be capped at that. This is probably better there, anyway.

New sales:

https://backpack.tf/profiles/76561198220098345#!/compare/1603411200/1603497600

https://backpack.tf/profiles/76561198867661640#!/compare/1603065600/1603497600

Sold with 25 keys for Duped DB Toe

If used here, minimum price would be 75 keys, due to buyers.

https://pastebin.com/30bri7nG

https://bot.tf/stats/listings/4K008J61

B/O of 90 keys

https://backpack.tf/profiles/76561198867661640#!/compare/1603584000/1604016000

https://backpack.tf/profiles/76561198064658655#!/compare/1603929600/1604016000

Untrace

https://bot.tf/stats/listings/M07XDQQX

B/O of 85 keys

https://marketplace.tf/items/tf2/306;5;u38

https://backpack.tf/item/1239987719

$169.99 / $1.81 = 93.92 keys

https://backpack.tf/profiles/76561198152731553#!/compare/1604793600/1604880000

https://backpack.tf/profiles/76561198261265788#!/compare/1604534400/1604880000

Sold for 66 keys

https://bot.tf/stats/listings/420O5ERQ

B/O of 66 keys

https://backpack.tf/profiles/76561198261265788#!/compare/1604534400/1604880000

https://backpack.tf/profiles/76561198216445133#!/compare/1604793600/1604880000

Sold for ~67 keys

So your total sales are now @:

51, 55, 66, 67, 69, 73, 75?, 85, 94 keys

buyers are still sitting ~64, 65 keys,

85 is capped from higher,

94 resold for 66 in a day or so,

then resold for 67 in another day or so.

I'd say use 67 as your low end.

I'd recommend figuring out what the Darkblaze Toe comes out to. Assuming it doesn't cap at buyout, you should be able to use that as a high end.