So where is 35 Keys coming from?

I see the grenade launcher & knife (total 17.5 Keys) + 6 Keys + ProKS Hitman's which is like (3.5 Keys), which adds up to 27, not 35.

If you value the stranges higher than market price due to their spells you'll have to provide proof of them selling for higher.

as others have pointed out, you'll need to provide proof that the knife and the Hitman can actually SELL at those prices, not just that they are currently SELLING at those prices.

Knife sales:

https://backpack.tf/profiles/76561198140867542#!/compare/1594080000/1597881600

https://backpack.tf/profiles/76561198247814120#!/compare/1597795200/1597881600

Sold for 4 keys

https://backpack.tf/profiles/76561198247814120#!/compare/1597881600/1598227200

https://backpack.tf/profiles/76561198112306237#!/compare/1597968000/1598054400

Sold for one key

https://backpack.tf/profiles/76561198112306237#!/compare/1598054400/1598140800

https://backpack.tf/profiles/76561198439924600#!/compare/1598400000/1598659200

Unsure what you bought it yourself for, but it doesn't look like more than one key.

Probably better to value the knife at 1 key, as 4 is definitely inaccurate.

Hitman Sale:

https://backpack.tf/profiles/76561198120774019#!/compare/1598313600/1598400000

https://backpack.tf/profiles/76561198439924600#!/compare/1598313600/1598400000

Sold for KaW Robo Glove(7)

I'd also value the Aussie Grenade Launcher at 19, as that is roughly what the average of buy and sell orders on it come out to.

So the total is 1 + 7 + 19 + 6 = 33 keys.

So resuggest at that.