I am useless at trying to do this myself, however since this is a request forum
It would be great to have some way to know the combined cost of different spells, pieces of armor etc. In other words, other than the harvestable things, a basic calculator that adds the price you payed at the vendor for each ingriedient used in a recipe. The only problem I see is that some ingriedients can be bought ready to use, andmay also be crafted. I am going to try to put a spreadsheet together so Id be happy to share the infoI gather on the subject.