Resuggesting because the previous suggestion had a mistake in it

Credit to Scourge for fixing Sale 1 and the range

Sale 1: Sale at 7 keys pure

https://backpack.tf/item/7348449838

https://backpack.tf/profiles/76561198358296372#!/compare/1592690400/1592776800

The buyer then deposited the taunt to Marketplace.tf and is one of the sellers

Sale 2: Other item deposit to marketplace.tf

https://backpack.tf/item/5570120285

Sale 3: Sold for a Festive Spirit Taunt: I See You (also unpriced)

https://backpack.tf/item/2778840680

https://backpack.tf/profiles/76561198261915734#!/compare/1591747200/1592006400

https://backpack.tf/profiles/76561198123530436#!/compare/1591833600/1592438400

Sale 4: Sale on Marketplace.tf at 6.53 keys (rounded to 6.5 keys): https://marketplace.tf/items/tf2/1116;5;u3036

July 6 2020: Sale at $12.99 (median key price: $1.99, 12.99/1.99=6.53 keys)

However, I couldn't find the item history of this sale

Taking 6.5-7 keys as the value for my suggestion