Marketplace Sales:

https://marketplace.tf/items/tf2/31290;5;u3120

https://backpack.tf/item/12686438099 - September 7th

https://backpack.tf/item/13265194225

$6.99, September 7th & October 1st

https://marketplace.tf/items/tf2/5021;6 - keys were:

$1.80, September 7th

$1.90, October 1st

6.99/1.8 = 3.883, rounds to 3.9 keys

6.99/1.9 = 3.679, round to 3.7 keys

Other Sales:

#1

https://backpack.tf/profiles/76561198132962661#!/compare/1760313600/1760400000 - won’t update

https://backpack.tf/profiles/76561199763105933#!/compare/1760745600/1760832000

https://backpack.tf/item/12396903569

Untraceable

#2

https://backpack.tf/profiles/76561199763105933#!/compare/1760745600/1760832000

https://backpack.tf/profiles/76561199564942025#!/compare/1760832000/1760918400

https://backpack.tf/item/12396903569

Untraceable

#3

https://backpack.tf/profiles/76561199107268633#!/compare/1759968000/1761264000

https://backpack.tf/profiles/76561199507308115#!/compare/1759276800/1760313600

https://backpack.tf/item/13265194225

Untraceable, looks like a spy set gift or something

Sellers:

https://stntrading.eu/item/tf2/Unusual+Floppin%27+Frenzy+Taunt%3A+The+Travel+Agent

https://i.imgur.com/Aeh4af0.png

https://backpack.tf/item/12396903569 - ~3.6 keys (valuing keys at ~61 ref)

Sales at:

3.7

3.9

Forgive me, but I’m going to be using that cheaper seller to set the low-end, as it’s only slightly below the other sales. Will re-suggest later if necessary.

https://i.imgur.com/Ra2IYAR.png - Buy order as high as ~3.5 keys, again valuing keys at ~61 ref

Taking 3.6-3.9 keys.