"All/Multi-Class hype" is apparently three or so months old according to the comments on the contributor page: http://steamcommunity.com/sharedfiles/filedetails/comments/93465414

This suggestions fits well within that timeframe.

Could only find 2 of these

http://backpack.tf/item/3381239043 - no recent usable sales

http://backpack.tf/item/3288323161 - 1 recent usable sale

Sale 1: August 14

Sold with an Anti-Freeze Triboniophorous Tyrannus for a Sunbeams Toy Soldier (outdated)

Seller: http://backpack.tf/profiles/76561198044382185#!/compare/1471132800/1471305600

Buyer: http://backpack.tf/profiles/76561198044333971#!/compare/1471132800/1471219200

Can't use

Sale 2: August 7

Sold with a Cloud 9 Whoopee Cap, a Strange mishap Mercenary, a Ghastly Ghosts Jr Chieftain's Challenge, an Electric Hat Protector A Head Full of Hot Air, and an Australium Sniper Rifle for a Strange Circling TF Logo Dark Falkirk Helm

Seller: http://backpack.tf/profiles/76561198059145111#!/compare/1470528000/1470614400

Buyer: http://backpack.tf/profiles/76561198044333971#!/compare/1470528000/1470614400

Can't price because there are no other sales on the Chieftain or the Falkirk Helm; not using

Sale 3: July 24

Sold for 24 keys pure

Seller: http://backpack.tf/profiles/76561198081963512#!/compare/1469318400/1469404800

Buyer: http://backpack.tf/profiles/76561198074924284#!/compare/1469318400/1469404800

24 keys

Sale 4: July 23

Big bulk unusual sale extravaganza

http://backpack.tf/profiles/76561198081963512#!/compare/1469232000/1469318400

Bulk sale; not using

No idea what's going on for the next few changes of hands on July 23. It's moving around too fast for backpack.tf to track, so can't use those sales either.

Sale 5: July 22

???

Seller: http://backpack.tf/profiles/76561198168995397#!/compare/1469145600/1469232000

Buyer: http://backpack.tf/profiles/76561198078373457#!/compare/1469145600/1469232000

Sorta disappears between backpacks; not using

Sale 6: July 18

Sold with many hats for many other hats

Seller: http://backpack.tf/profiles/76561198030928100#!/compare/1468800000/1468886400

Buyer: http://backpack.tf/profiles/76561198168995397#!/compare/1468800000/1468886400

Bulk sale; not using

Sale 7: July 16

Much hat

Seller: http://backpack.tf/profiles/76561198221628792#!/compare/1468627200/1468713600

Buyer: http://backpack.tf/profiles/76561198030928100#!/compare/1468627200/1468713600

Bulk sale; not using

Looking for criticism and/or advice, because I have a feeling there is more that I'm missing.

Offers around 40 keys in the comments here.

http://www.tf2outpost.com/trade/28415885

Closing this and my other suggestion up.