Final resuggestion after Shuffle Spy came in to clarify a last thing.

! Resuggestion after Offline came in to clarify something !

Thanks to Scourge for the help!

Sale 1:

https://backpack.tf/profiles/76561198302925071#!/compare/1583452800/1583625600

https://backpack.tf/profiles/76561198271577665#!/compare/1583539200/1583625600

Sold for ~19 keys in sweets

sale 2:

https://backpack.tf/profiles/76561198271577665#!/compare/1585180800/1585440000

https://backpack.tf/profiles/76561198090465858#!/compare/1585180800/1585440000

Sold with 7 keys for PE Titanium + DBD titanium

use on PE Titanium

Sale 3:

https://backpack.tf/profiles/76561198090465858#!/compare/1585612800/1585699200

https://backpack.tf/profiles/76561198151835897#!/compare/1585699200/1585785600

Sold for 25 keys

sale 4:

https://backpack.tf/profiles/76561198151835897#!/compare/1585785600/1586217600

https://backpack.tf/profiles/76561198150597524#!/compare/1585958400/1586131200

Sold with ~9 keys in sweets for Burning Pom Pom(40.5)

Total is 31.5 keys

sale 5:

https://marketplace.tf/items/tf2/205;15;u701;w2;pk248;kt-2

$40 / $1.91 = 20.94 keys

Total sales @:

19, 21, 25, 31.5 keys

https://backpack.tf/classifieds?page=2&item=Rocket%20Launcher&quality=15&tradable=1&craftable=1&australium=-1&particle=701&killstreak_tier=0

General buyers at ~21 keys

https://marketplace.tf/items/tf2/205;5;u701;w2;pk248

$49.99

https://marketplace.tf/items/tf2/205;15;u701;w2;pk248;kt-2 + https://backpack.tf/item/8348525185 - Sold for $69.99 (35 Keys)

https://marketplace.tf/items/tf2/205;15;u701;w2;pk248;kt-2;festive - Sold for $57.99 (29 Keys)

25 - 35 Keys will work.