Sale 1:

https://backpack.tf/profiles/76561198263308196#!/compare/1519776000/1519862400

https://backpack.tf/profiles/76561198050518375#!/compare/1519776000/1519862400

Sold for 34 pure keys.

Sale 2:

https://backpack.tf/profiles/76561198050518375#!/compare/1519862400/1519948800

https://backpack.tf/profiles/76561198122514109#!/compare/1519948800/1520035200

2 possible sales here:

either it sold for 33 pure, or it sold for 3 keys + Insomnia Cannonball.

Cannonball Mini:

https://backpack.tf/profiles/76561198147805874#!/compare/1515196800/1515283200

https://backpack.tf/profiles/76561198179707937#!/compare/1515196800/1515283200

Sold for Bubbling Peak(31)

https://backpack.tf/profiles/76561198232041512#!/compare/1520726400/1520812800

Sold for GE Capo Capper(32.5)

This sale is traceable as it is the only sale to happen between Beaser & TF2Mart bots.

Averaging price of Cannonball at 32.

total for Cannonball sale is 32 + 3 = 35

Concerning the 2nd sale:

While there is no clear indicator as to which price it sold for, the total from the 1st sale is of a difference of one key both ways.

Even if this cannot be used as a sale, it is certainly support that the hat does not sell for a lot more or a lot less.

Averaging both possible sales still equals 34.

Pricing at 34 keys flat.