https://marketplace.tf/items/tf2/30572;5;u3139

9.99/1.84~5.4 keys

https://backpack.tf/profiles/76561198286418919#!/compare/1727136000/1728259200

Bulk

https://backpack.tf/profiles/76561198109901645#!/compare/1724284800/1725062400

Bulk

Sold for a KS Star Crossed Knife (FN) + a Voodoo-Cursed Sniper Soul + a Voodoo-Cursed Engineer Soul + a Boston Breakdance + one key + 81 refined (using ID "14928791230" of the taunt)

Seller: https://backpack.tf/profiles/76561199581722058#!/compare/1726790400/1726876800

Buyer: https://backpack.tf/profiles/76561198286418919#!/compare/1725926400/1727136000

Knife : https://steamcommunity.com/market/listings/440/Star%20Crossed%20Knife%20%28Factory%20New%29

Two recent sales for 0.85 and 0.95 keys, taking average 0.9 keys

And killsteaker is ~0.4 keys:

https://steamcommunity.com/market/listings/440/Killstreak%20Knife%20Kit

Sniper soul :

https://backpack.tf/suggestion/673cf1fad7073da10f029b37

19.66 ref ~0.35 keys

Engineer soul:

https://backpack.tf/stats/Unique/Voodoo-Cursed%20Engineer%20Soul/Tradable/Craftable

Price is outdater, old price is about 0.2 keys and current is 0.25, so i think it doesn't really matters, taking it as 0.25 keys

Boston breakdance:

https://backpack.tf/suggestion/6733a21a115cbd2ddc03f918

Recently updated

Taking 1.75 keys

81/59~1.35 keys (81 ref)

0.9+0.4+0.35+0.25+1+1.35=4.25 keys

(4.25+5.4) /2=4.825 Less than 5, so taking 4.25-5.4 keys