https://backpack.tf/classifieds?item=Lucky%20Cat%20Hat&quality=11&tradable=1&craftable=1&australium=-1&killstreak_tier=0

Buy Orders start at 11.95, ~12 keys.

Sell Orders start at 12.63, ~12.6 keys. Excluding the 12.45 keys sell listing due to being an outlier listing, as well as likely being a quicksell listing.

Bot.tf Sales:

https://ibb.co/pvD8bZG

https://ibb.co/GPCFXtv

1 Sold for 11.87, ~11.9 keys.

2 Sold for 10.55, ~10.6 keys.

1 Sold for 12.63, ~12.6 keys.

1 Sold for 12.67, ~12.7 keys.

1 Sold for 12.68, ~12.7 keys.

Marketplace.tf Sales:

https://ibb.co/Czzb40d

1 Sold for $18.32/ 1.87 = 9.79, ~9.8 keys.

1 Sold for $23.77/ 1.88 = 12.64, ~12.6 keys.

1 Sold for $24.90/ 1.85 = 13.45, ~13.5 keys.

SCM Sales:

https://ibb.co/W3tL7R6

1 Sold for $30.50/ 2.33 = 13.09, ~13.1 keys.

1 Sold for $21.00/ 2.30 = 9.13, ~9.1 keys.

1 Sold for $31.59/ 2.24 = 14.1 keys.

Excluding all other sales due to them being either too low for current buy orders, or too high for current sell orders. Going with 12.6 keys solid.