Not working for me I put it in gameuser settings 

it's in the game Ini 
/Script/ShooterGame.ShooterGameMode] 
ConfigOverrideItemCraftingCosts=250primalblood(ItemClassString="FMK_Artifact_11_C",BaseCraftingResourceRequirements=((ResourceItemTypeString="PrimalBlood.PrimalItemConsumable_PrimalBlood_C",BaseResourceRequirement=250,bCraftingRequireExactResourceType=true))) 

Right, core ARK things, such as crafting requirements, egnram altering, non-Mod settings, etc will all be in Game.ini

Non-core ARK things, like Mod settings, will be in GameUserSettings.ini