I got an Idea to lessen the Value cost of Craftable Items...
This is The Example : Like You got a God Dagger and your Level is enough for the Cyro thorn Blades and You want to craft it Immediately like You are not going to sell your God Dagger so You Can Buy Your Next Weapon or Set..
My Suggestion Is Your current weapon can be a material for the next craftable weapon or Set You going to craft. ( It depends If you got money to buy directly but most of the times I used to craft my Weapons And Set My Own So It's An Optional )
Example :
Lemme Explain why the cost of the Cyro Thorn is only 5,135,000
So the cost of the Cyro Thorn will be lessen cause of the God Dagger.
The Cost of the Cyro thorn will be "Cyro Thorn Blade Cost Minus The Cost of God Dagger times 85% so it will be"
"7,500,000minus3,100,000times85% will be 7,500,000-2,365,000= 5,135,000