There are plenty of more sales more than just this one. Please look into the other sales then come back when you are ready.

https://backpack.tf/item/7515583891

https://backpack.tf/item/7083559365

https://backpack.tf/item/6664350188

https://backpack.tf/item/6114050763

https://backpack.tf/item/5955105415

https://backpack.tf/item/4945120934

https://backpack.tf/item/4756102540

https://backpack.tf/item/4399035859

https://backpack.tf/item/4247220534

https://backpack.tf/item/4164558744

https://backpack.tf/item/3911400530

https://backpack.tf/item/3904351944

https://backpack.tf/item/3901457666

There's probably more sales in those histories, some are definitely unusualified so they won't appear to have a sale.

It's probably best to wait until the Halloween event is over before trying to price new items such as unusual taunts and unusual hats that came from this event.