Since I know nothing about these things but have nothing else to do... why not.

Only two ghosts ml sellers on market. One after I bought theirs.

http://www.tf2outpost.com/trade/26434207 clean ml sold for clean purple max + 14 keys + 2 paints (~1 key each) so around 42 keys in total.

Proof: http://gyazo.com/8cc10aa8d098edd75c0456e80df522a8 (the crate is #91 so it can be considered worthless in this trade)

However, the seller was selling their hats to collect pure for DBD Antlers so this is likely to be slightly below the actual value. They were offered time warp safe n sound before (~56 keys) but they rejected the offer for it being duped. (Found on trade)

http://www.tf2outpost.com/trade/26547986 The only current seller (& unboxer) has declined offers such as green energy glengarry bonnet (bo's 50-51 keys) and clean knifestorm panama if they add a bit (owner priced it as 55 keys in other trade)

http://gyazo.com/be07eb07d8cd714a725929e0aef66bb0

With no real high end value to point out I'll leave it to 50 since that's the highest value rejected so far (panama wants add and sns is duped so it's worth less than 56 keys.) Feel free to re-suggest this if you find better values for this hat.

Hopefully I did it right this time... nah, I can't do anything right in this world. Well, we'll see about that. Adios, amiibos!