Let me help you with the sales:

First off, that KE sale is invalid.

https://backpack.tf/profiles/76561198030066149#!/compare/1544400000/1544659200 sold to Most Wanted for KE.

KE needs a mini as you showed an invalid one.

https://backpack.tf/profiles/76561198030066149#!/compare/1545091200/1545177600

Same guy also sold the KE for a Stormy Storm Gibus + low adds

https://backpack.tf/profiles/76561198246165068#!/compare/1546041600/1546300800

https://backpack.tf/profiles/76561198066369246#!/compare/1546214400/1546300800

The next guy sold the KE + a Strange Pro Beggars Bazooka for a Aussie Scattergun

https://backpack.tf/profiles/76561198272298198#!/compare/1544227200/1544313600 Sold the Handcraft for a GFetti Tundra Top, Outliner I would say due to other sales made for the handcraft

Next one:

https://backpack.tf/profiles/76561198156317048#!/compare/1541116800/1541376000

https://backpack.tf/profiles/76561198308660003#!/compare/1541289600/1541721600

Sold for a Open Mind Handcrafts + sweets

https://backpack.tf/profiles/76561198089793578#!/compare/1544745600/1545523200

https://backpack.tf/profiles/76561198308660003#!/compare/1544832000/1545091200

Probably sold on SCM

Next one:

https://backpack.tf/profiles/76561198038302723#!/compare/1545177600/1545436800

https://backpack.tf/profiles/76561198092288477#!/compare/1545264000/1545436800

Sold for 41 keys

Next one:

https://backpack.tf/profiles/76561198277435514#!/compare/1542758400/1542931200

https://backpack.tf/profiles/76561198317877042#!/compare/1542931200/1543017600

Again, probably sold on SCM

And finally:

https://backpack.tf/profiles/76561198065784290#!/compare/1541808000/1542153600

https://backpack.tf/profiles/76561198074423978#!/compare/1541808000/1543190400

Another SCM sale.

The current classifieds contain two sellers significantly below this. This is most definitely too high.

Closing here on account of my earlier comment. This needs more work and/or data points before it can be priced.