I want to start off by thanking Ollie G for this awesome mod! I appreciate your work.

Here is the code that i've done for those of you who wish to use custom crafting costs. This is almost all of the gunpowder ammo for this mod. I have reduced all of the crafting costs to one of the exact same materials and you can adjust it to your wish. I was able to do this without the dev kit.

I will show you how I did this so you can change any item to any crafting cost you wish. You start by opening the mod folder (D:\Program Files\Steam\SteamApps\common\ARK\ShooterGame\Content\Mods\812639416) for me. If you are not sure which sub-folder your item is in, use the spawn codes to locate the correct folder. For example, the rocket launcher ammo is in the torpedo folder, with the exception of the homing rocket, which is in the rocket folder. In each folder you will find files with the ".uasset" extensions. All I did was replace the uasset extension with "_C" without the quotes obviously. This is your ItemClassString. You can use that as the item being overridden or the ResourceItemTypeString. I found an "OverrideItemCrafting" calculator by just googling OverrideItemCrafting, which gave me all of the vanilla ItemClassString's and generated the code. I just replaced some vanilla items with the modded items where needed.

If you use this code below, make sure that the entire code is on the same line and no spacing between each line of code.

ConfigOverrideItemCraftingCosts=(ItemClassString="PrimalItemAmmo_SimpleBullet_WeaponMod_C",BaseCraftingResourceRequirements=((ResourceItemTypeString="PrimalItemResource_MetalIngot_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemResource_Gunpowder_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false)))

ConfigOverrideItemCraftingCosts=(ItemClassString="PrimalItemAmmo_AdvancedBullet1_WeaponMod_C",BaseCraftingResourceRequirements=((ResourceItemTypeString="PrimalItemResource_MetalIngot_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemResource_Gunpowder_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false)))

ConfigOverrideItemCraftingCosts=(ItemClassString="PrimalItemAmmo_TacticalShotgunBullet1_WeaponMod_C",BaseCraftingResourceRequirements=((ResourceItemTypeString="PrimalItemResource_MetalIngot_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemResource_Gunpowder_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemResource_Sparkpowder_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false)))

ConfigOverrideItemCraftingCosts=(ItemClassString="PrimalItemAmmo_TacticalShotgunBullet2_WeaponMod_C",BaseCraftingResourceRequirements=((ResourceItemTypeString="PrimalItemResource_Gasoline_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemResource_Gunpowder_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemResource_MetalIngot_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemAmmo_TacticalShotgunBullet1_WeaponMod_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false)))

ConfigOverrideItemCraftingCosts=(ItemClassString="PrimalItemAmmo_TacticalShotgunAPBullet_WeaponMod_C",BaseCraftingResourceRequirements=((ResourceItemTypeString="PrimalItemResource_MetalIngot_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemResource_Gunpowder_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemAmmo_TacticalShotgunBullet1_WeaponMod_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false)))

ConfigOverrideItemCraftingCosts=(ItemClassString="PrimalItemAmmo_SimpleRifleBullet_WeaponMod_C",BaseCraftingResourceRequirements=((ResourceItemTypeString="PrimalItemResource_MetalIngot_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemResource_Gunpowder_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false)))

ConfigOverrideItemCraftingCosts=(ItemClassString="PrimalItemAmmo_SimpleRifleAPBullet_WeaponMod_C",BaseCraftingResourceRequirements=((ResourceItemTypeString="PrimalItemResource_MetalIngot_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemResource_Gunpowder_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemAmmo_SimpleRifleBullet_WeaponMod_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false)))

ConfigOverrideItemCraftingCosts=(ItemClassString="PrimalItemAmmo_AdvancedBulletAP_WeaponMod_C",BaseCraftingResourceRequirements=((ResourceItemTypeString="PrimalItemResource_MetalIngot_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemResource_Gunpowder_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemAmmo_AdvancedBullet1_WeaponMod_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false)))

ConfigOverrideItemCraftingCosts=(ItemClassString="PrimalItemAmmo_TranqDart_WeaponMod_C",BaseCraftingResourceRequirements=((ResourceItemTypeString="PrimalItemResource_MetalIngot_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemConsumable_Narcotic_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemAmmo_SimpleRifleBullet_WeaponMod_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false)))

ConfigOverrideItemCraftingCosts=(ItemClassString="PrimalItemAmmo_AdvancedRifleBullet_WeaponMod_C",BaseCraftingResourceRequirements=((ResourceItemTypeString="PrimalItemResource_MetalIngot_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemResource_Gunpowder_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false)))

ConfigOverrideItemCraftingCosts=(ItemClassString="PrimalItemAmmo_AdvancedRifleAPBullet_WeaponMod_C",BaseCraftingResourceRequirements=((ResourceItemTypeString="PrimalItemResource_MetalIngot_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemResource_Gunpowder_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemAmmo_AdvancedRifleBullet_WeaponMod_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false)))

ConfigOverrideItemCraftingCosts=(ItemClassString="PrimalItemAmmo_AdvancedElectricRifleBullet_WeaponMod_C",BaseCraftingResourceRequirements=((ResourceItemTypeString="PrimalItemResource_AnglerGel_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemResource_Electronics_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemAmmo_AdvancedRifleBullet_WeaponMod_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false)))

ConfigOverrideItemCraftingCosts=(ItemClassString="PrimalItemAmmo_AdvancedBullet2_WeaponMod_C",BaseCraftingResourceRequirements=((ResourceItemTypeString="PrimalItemResource_AnglerGel_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemResource_Electronics_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemAmmo_AdvancedBullet1_WeaponMod_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false)))

ConfigOverrideItemCraftingCosts=(ItemClassString="PrimalItemAmmo_FuelContainter_WeaponMod_C",BaseCraftingResourceRequirements=((ResourceItemTypeString="PrimalItemResource_Gasoline_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false)))

ConfigOverrideItemCraftingCosts=(ItemClassString="PrimalItemAmmo_TorpedoRocket_WeaponMod_C",BaseCraftingResourceRequirements=((ResourceItemTypeString="PrimalItemResource_ChitinPaste_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemResource_Crystal_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemResource_Electronics_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemResource_Gunpowder_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemResource_MetalIngot_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemResource_Polymer_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false)))

ConfigOverrideItemCraftingCosts=(ItemClassString="PrimalItemAmmo_RocketTranqUW_WeaponMod_C",BaseCraftingResourceRequirements=((ResourceItemTypeString="PrimalItemAmmo_TorpedoRocket_WeaponMod_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemConsumable_Narcotic_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false)))

ConfigOverrideItemCraftingCosts=(ItemClassString="PrimalItemAmmo_RocketHomingMissile_WeaponsMod_C",BaseCraftingResourceRequirements=((ResourceItemTypeString="PrimalItemResource_ChitinPaste_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemResource_Crystal_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemResource_Electronics_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemResource_Gunpowder_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemResource_MetalIngot_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemResource_Polymer_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false)))

ConfigOverrideItemCraftingCosts=(ItemClassString="PrimalItemAmmo_RefinedTranqDart_WeaponsMod_C",BaseCraftingResourceRequirements=((ResourceItemTypeString="PrimalItemConsumable_JellyVenom_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemAmmo_TranqDart_WeaponMod_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemResource_MetalIngot_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false)))

ConfigOverrideItemCraftingCosts=(ItemClassString="PrimalItemAmmo_AdvancedSniperBullet_WeaponMod_C",BaseCraftingResourceRequirements=((ResourceItemTypeString="PrimalItemResource_MetalIngot_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemResource_Gunpowder_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false)))

ConfigOverrideItemCraftingCosts=(ItemClassString="PrimalItemAmmo_AdvancedSniperAPBullet_WeaponMod_C",BaseCraftingResourceRequirements=((ResourceItemTypeString="PrimalItemResource_MetalIngot_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemResource_Gunpowder_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemAmmo_AdvancedSniperBullet_WeaponMod_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false)))

ConfigOverrideItemCraftingCosts=(ItemClassString="PrimalItemAmmo_SniperTranqDart_WeaponMod_C",BaseCraftingResourceRequirements=((ResourceItemTypeString="PrimalItemResource_MetalIngot_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemConsumable_Narcotic_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemAmmo_AdvancedSniperBullet_WeaponMod_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false)))

ConfigOverrideItemCraftingCosts=(ItemClassString="PrimalItemAmmo_NetGun_WeaponMod_C",BaseCraftingResourceRequirements=((ResourceItemTypeString="PrimalItemResource_Fibers_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemConsumable_Narcotic_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemResource_Stone_C",BaseResourceRequirement=1.0,bCraftingRequireExactResourceType=false)))