Using all killstreak tiers as proof (except for Professional ks because they sell higher)

Rounding all values to the nearest whole number

Taking past 30 days

Bot.tf stats:

(No KS) https://imgur.com/8EFFM7S

Sales:

2 @ 36 keys, 35.33 ref ~37

1 @ 38 keys, 40.00 ref ~39

1 @ 36 keys, 40.66 ref ~37

1 @ 38 keys

Buys:

2 @ 36 keys, 40.55 ref ~37

2 @ 36 keys, 40.22 ref ~37

1 @ 37 keys, 30.55 ref ~38

1 @ 36 keys, 15.00 ref ~36

1 @ 36 keys, 14.33 ref ~36

1 @ 36 keys, 15.33 ref ~36

(Basic KS) https://imgur.com/SIdJlA4

Sales:

3 @ 40 keys

1 @ 36 keys, 20.22 ref ~36

1 @ 36 keys, 20.33 ref ~36

1 @ 36 keys, 21.77 ref ~36

Buys:

1 @ 35 keys

1 @ 37 keys, 33.11 ref ~38

1 @ 37 keys, 35.00 ref ~38

1 @ 34 keys

(Spec KS) https://imgur.com/NQGqrHA

Sales:

1 @ 38 keys, 45.33 ref ~39

1 @ 38 keys, 43.66 ref ~39

1 @ 40 keys

1 @ 36 keys, 43.33 ref ~37

1 @ 42 keys

1 @ 37 keys, 22.22 ref ~37

1 @ 40 keys, 31.33 ref ~41

Buys:

1 @ 36 keys, 3.33 ref ~36

1 @ 37 keys, 1.55 ref ~37

1 @ 36 keys, 6.11 ref ~36

1 @ 36 keys, 36.11 ref ~37

1 @ 37 keys, 3.11 ref ~37

1 @ 37 keys, 3.00 ref ~37

Marketplace.tf sales vary between $65.41 and $78, 35.94-42.62 keys https://marketplace.tf/items/tf2/200;11;australium

SCM sales vary between $70.49 and $100, 31.32-44.44 keys https://steamcommunity.com/market/listings/440/Strange%20Australium%20Scattergun

Using the pure sales as priority, the SCM and MP sales will support the raise

Sellers at 38 keys make 39-42 look high also considering the fact the seller at 39 has been unsold for 8 days

Buyers at 36 have been there for nearly a week but can't ignore the amount of sales at 36

Going 36-38