Resuggestion, thanks to Mindacos for the info!

Trying some new things (hopefully without mistakes)

bot.tf:

https://i.imgur.com/FvtPxAQ.png

https://bot.tf/stats/item?def=132&q=11&ef=&craft=1&aus=1&ks=0&source=browser_script

1 sale @ 34.05 keys,

1 sale @ 34.90 keys,

1 sale @ 34.3 keys

MPTF, past 30 days:

https://marketplace.tf/items/tf2/132;11;australium

$58.16 / $1.82 = 31.96 keys

$59 / $1.81 = 32.60 keys

$68.99 / $1.80 = 38.33 keys

$58.71 / $1.79 = 32.80 keys

SCM: (past 30 days) NOTE: this is in CAD, not USD!!

["Oct 11 2019 04: +0", 93.949 ,"1"] / 2.993 = ~31.42 keys

["Oct 11 2019 16: +0", 114.082 ,"1"] / 3.161 = ~36.10 keys

["Oct 12 2019 21: +0", 114.971 ,"1"] / 3.04 = ~37.82 keys

["Oct 17 2019 15: +0", 120.753 ,"1"] / 3.07 = ~39.33 keys

["Oct 18 2019 20: +0", 120.554 ,"1"] / 3.12 = ~38.61 keys

["Oct 20 2019 12: +0", 113.562 ,"1"] / 3.01 = ~37.73 keys

["Oct 22 2019 15: +0", 113.562 ,"1"] / 3.16 = ~35.94 keys

["Oct 26 2019 21: +0", 105.345 ,"1"] / 3.068 = ~34.34 keys

["Oct 27 2019 04: +0", 116.248 ,"1"] / 3.147 = ~36.94 keys

["Oct 27 2019 21: +0", 94.037 ,"1"] / 3.068 = ~30.65 keys

["Oct 29 2019 06: +0", 95.146 ,"1"] / 3.042 = ~31.28 keys

["Oct 29 2019 12: +0", 120.345 ,"1"] / 3.086 = ~39.00 keys

["Oct 30 2019 12: +0", 120.491 ,"1"] / 3.057 = ~39.41 keys

["Nov 01 2019 19: +0", 120.547 ,"1"] / 3.15 = ~38.27 keys

Total sales @:

30.7

31.3

31.4

32

32.6

32.8

34.1

34.3

34.35

34.9

35.9

36.1

36.9

37.75

37.8

38.25

38.3

38.6

39

39.35

39.4

buyers up to 32 keys,

seller for 40 keys,

MPTf buyers for ~32 keys,

lets go with 32.6 - 39.4 keys

Mindacos' Part:

Looking at classifieds, buyers are up to 32.8 Keys, and sellers lie at 39(with a few non-bots at 34, but given that there's a hidden buyer at 34 that probably won't last long). You could try narrowing down the range a bit by making it go more in-line with current classifieds with 32.8-39.