https://backpack.tf/item/11939169544

Agreed and sold for $342 via Steam Market.

Sadly, the Steam Market page shows no sell history. So I'll upload the entire conversation of the deal + the market history of user HALOGAMER0329 showing the purchase:

https://imgur.com/a/AKqUD1u

User HALOGAMER0329 bought the item, which later will be sold to me for the same amount, but via Payoneer.

Here is the page that should show the sell history but doesn't:

https://steamcommunity.com/market/listings/440/Unusual%20Specialized%20Killstreak%20Spectrum%20Splattered%20Grenade%20Launcher%20%28Field-Tested%29

I checked others just in case, but they don't show anything either:

https://steamcommunity.com/market/listings/440/Unusual%20Spectrum%20Splattered%20Grenade%20Launcher%20%28Field-Tested%29

https://steamcommunity.com/market/listings/440/Unusual%20Professional%20Killstreak%20Spectrum%20Splattered%20Grenade%20Launcher%20%28Field-Tested%29

https://steamcommunity.com/market/listings/440/Unusual%20Killstreak%20Spectrum%20Splattered%20Grenade%20Launcher%20%28Field-Tested%29

We do have the price history page however, which shows what it was listed for (in your local currency):

https://steamcommunity.com/market/pricehistory/?country=PT&currency=3&appid=440&market_hash_name=Unusual%20Specialized%20Killstreak%20Spectrum%20Splattered%20Grenade%20Launcher%20%28Field-Tested%29

As seen in the chat, the offer of 200 keys was taken, but we agreed to make the trade via Steam market at the key price of $1.71, which was the current price in mannco.store, at that moment. I'm aware that in any other case, I should take the key value of backpack.tf.

200 x 1.71 = $342

The initial offer was still 200 keys, so should not affect the suggestion at all, if it does, please do tell!