https://backpack.tf/classifieds?item=Baron%20von%20Havenaplane&quality=11&tradable=1&craftable=1&australium=-1&killstreak_tier=0

No currently existing buy orders.

Sell Orders start at 3 keys.

No currently existing Bot.tf sales.

No currently usable Marketplace.tf sales.

SCM Sales:

https://ibb.co/bPDKfBf

1 Sold for $1.01/ 2.34 = 0.43, ~20.11 ref.

1 Sold for $1.94/ 2.33 = 0.83, ~38.77 ref.

1 Sold for $2.29/ 2.33 = 0.98, ~45.77 ref.

1 Sold for $2.27/ 2.30 = 0.98, ~45.77 ref.

1 Sold for $1.85/ 2.25 = 0.82, ~38.22 ref.

1 Sold for $1.70/ 2.33 = 0.72, ~33.55 ref.

1 Sold for $1.46/ 2.26 = 0.64, ~29.88 ref.

1 Sold for $1.12/ 2.25 = 0.49, ~22.88 ref.

Excluding any and all other sales due to them being either too unreasonably low for a logical buy order, or too high for current sell orders. This includes the sale on SCM for $0.11, which was an extremely obvious quicksell. Going with 20.11 - 45.77 ref.