https://backpack.tf/classifieds?item=Kapitan%27s%20Kaftan&quality=11&tradable=1&craftable=1&australium=-1&killstreak_tier=0

Buy Orders start at 29 ref.

Sell Orders start at 37 ref.

Bot.tf Sales:

https://ibb.co/qB16vHL

https://ibb.co/8srQV9y

1 Sold for 30 ref.

1 Sold for 31.22 ref.

No viable Marketplace.tf sales in 30 days.

SCM Sales:

https://ibb.co/m54C5Nd

1 Sold for $1.38/ 2.35 = 21.77 ref.

1 Sold for $2.00/ 2.26 = 41.11 ref.

1 Sold for $1.90/ 2.30 = 38.33 ref.

1 Sold for $1.84/ 2.31 = 36.88 ref.

1 Sold for $2.06/ 2.36 = 40.55 ref.

Excluding all other sales due to them being either too low for current buy orders or too high for current sell orders. Going with 30 - 36.88 ref.