I've been doing tons of research, and have completely compiled the list of materials needed for the items in the game.
https://docs.google.com/document/d/1cjpW943DovLY0BkuGYGeSlxIiui9zUKu5t4b...
So far, only Sword has been done. The only thing not on my current lists is that of Crowns, which will be done at a later date.
To do:
Gun (Finished, needs to be compiled)
Bomb (Finished, needs to be compiled)
Helmet (Finished, needs to be compiled)
Armor (Finished, needs to be compiled)
Shield (Finished, needs to be compiled)
Trinket (Finished, needs to be compiled)
Crown Costs
All data taken from the wiki. Notify me if any of my findings are incorrect, or if something is out of order.
EDIT: Anyone who wants to see the uncompiled data, here you go.
https://docs.google.com/document/d/1LulYXZiVOXRXEP5p_QXHGAX_jx4NOxwCZJJe...
I like to see people compiling such information. Good work. And now for the bad news...
The information would be more useful in a spreadsheet. You could make one row per item (Leviathan Blade, Chaos Cowl, Elite Boom Module, etc.), and one column per resource (crowns, Sharp Fangs, Radiant Fire Crystals, etc.). From such a spreadsheet, you could easily compute the totals that you're already posting. The advantage of the spreadsheet would be that the reader could see better how those totals arise, which items require which materials, etc.