Make the ship buy back option looking for equipments already in the inventory instead of purchasing new parts.

As a tick box option please, sometimes you want to buy a new one, sometimes you want to pull from inventory. But yes, good feature request.

+1

+1 this would also hopefully stop the "Item not found" spam message that doesn't do anything but clutter the chat.

+1, with the option thing that TRS suggested

Only with the option, +1.

Yeah, option. +1