Purple Energy Handyman's Handle

Still got it.

Sale 1:

Sold for a Holy Grail Taunt: The Box Trot.

https://backpack.tf/profiles/76561198152172841#!/compare/1525046400/1525219200

Really doesn't take a genius to tell me that this is an outlier and probably was at that time.

Sale 2:

Sold for a Strange Specialized Killstreak Australium Knife, 2 keys and some ref.

https://backpack.tf/profiles/76561198003404879#!/compare/1530403200/1530489600

https://puu.sh/ARxds.png Knife is 16.75ish keys. Gonna call the sale 19 keys.

Sale 3:

Sold for a Smoking Herald's Helm and a bunch of sweets.

https://backpack.tf/profiles/76561198106233311#!/compare/1529193600/1529366400

In rough calculations, the sweets would be about 8.5 keys total.

Honestly, this would be better used on that Herald's Helm just looking at histories and the lack of many other sales for that hat.

Sale 4:

Bulk sale for a Burning Flames Virtual Reality Headset.

https://backpack.tf/profiles/76561198009309781#!/compare/1527033600/1527120000

Sale 5:

I... uh... honestly don't know.

https://backpack.tf/profiles/76561198289697907#!/compare/1529193600/1529280000

https://backpack.tf/profiles/76561198312583107#!/compare/1529107200/1529193600

I guess I'll give this a shot; if there's any other non-garbled sales around, I'd happily add them into the suggestion. Rolling with 19 keys otherwise.