I've posted before on the materials needed to upgrade epic weapons, but I thought it might be useful for people to have a calculator that will take that data and let them calculate how many more materials are needed (including totems, gold, gems, etc.) to max out any remaining epics, taking into account their current materials they own. I also decided to add runes to the calculator, because I often find myself balancing between spending materials on epics versus runes.
Basically you just enter into the calculator the current level of all your epics and also enter all your current materials, gold and gems (both raw and crafted). The calculator will let you know how many more of each material you need. If you don't care about a particular epic, you can just set that epic to max level (12), and it will ignore it. This is useful if you want to prioritize certain epics over others and also balance out against rune creation.
There is a separate input tab for runes. You just enter the runes you'd like to be able to create on this tab and it will combine this data with the epic data to let you know how many materials you need to accomplish both maxing epics and creating certain runes. I tried putting shortcut buttons to reset the various input values, but this forum won't allow posting of macro-enabled spreadsheets, so I had to strip those out.
I've only done limited testing of the calculator, so would be grateful if a few people could test out. I can then make any corrections necessary based on that feedback. Since I put this together over time, it isn't extremely efficient or clean programming, so I apologize if there was a much better way to approach. Let me know if you find useful.