There is a way to change the costs for crafting items, it is a set of code that goes into your Game.ini file and looks something like this.......

ConfigOverrideItemCraftingCosts=(ItemClassString="PrimalItemStructure_CompostConverter_C",BaseCraftingResourceRequirements=((ResourceItemTypeString="PrimalItemResource_Wood_C",BaseResourceRequirement=20000.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemResource_Thatch_C",BaseResourceRequirement=10000.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemResource_Fibers_C",BaseResourceRequirement=5000.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemResource_Hide_C",BaseResourceRequirement=2500.0,bCraftingRequireExactResourceType=false)))

This code is one continuous line no spaces no returns.

Explanation of codes.

ItemClassString="PrimalItemStructure_CompostConverter_C
- is the crafting item you want to change (it will not have the _C as this is for the code only but ensure you add it in the code) the resource name will look like this
PrimalItemStructure_CompostConverter
but for the code to work you need to add the _C to the end of that name like so
PrimalItemStructure_CompostConverter_C
(hope that is clear)


((ResourceItemTypeString="PrimalItemResource_Wood_C
- is the resource you wish the iten to require for crafting (again remember to add the _C to the end of any resource name you put in).

BaseResourceRequirement=20000.0
- is the amount of the new resource need to craft.

bCraftingRequireExactResourceType=false)
- is whether you want the EXACT amount to be available this is usually set to false as you would need the exact amount no more no less. (This piece of code STILL NEEDS TO BE INCLUDED even though it is false)

For example to craft silica pearls in this mod with the following resources

2 x Rare Mushrooms
5 x Stone
5 x Organic Polymer

Place the following code into your Game.ini file

ConfigOverrideItemCraftingCosts=(ItemClassString="PrimalItemResource_Synthetic_Pearls_C",BaseCraftingResourceRequirements=((ResourceItemTypeString="PrimalItemResource_RareMushroom_C",BaseResourceRequirement=2.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemResource_Stone_C",BaseResourceRequirement=5.0,bCraftingRequireExactResourceType=false),(ResourceItemTypeString="PrimalItemResource_Polymer_Organic_C",BaseResourceRequirement=5.0,bCraftingRequireExactResourceType=false)))

A full list of resources can be found at the following link....

https://ark.gamepedia.com/Category:Resources