Hi Friend!
Boy are you in luck.
Here is a spreadsheet:
https://docs.google.com/spreadsheet/...Wc&usp=sharing
This is JC but I made it extensible for any tradeskill.
First - find out what skill difficulty the craft is, and then enter it in. Pottery/JC are the only 4s, I believe. It's either 2,3 or 4. There should be some info on it out there on eqtraders.
Second - Fill in your current skill level!
Third - Fill in your stat modifier - please note that some tradeskills use different stats to determine skill up!
For instance, I believe Blacksmithing takes the highest or STR or DEX. Fletching takes DEX! JC / Pottery definitely take INT!
Then, you can use the values on the tool to determine what you want to know on the bottom right there is a column:
Special Item
On this, enter in the COST - that's the cost of components to do the combine.
Enter the TRIVIAL of the item you want to make
Then you can see:
SUCCESS_RATE = how often will you be successful
SKill UP CHANCE - what's the chance you will skill up on this combine?
COST_TO_SKILL_UP - how much pp is it gonna cost you to get your next skill point on average? (please note that i know this field definitely works on JC, but not others. This is calculated by how often I will be successful and how much the combined jewelry sells back for - for instance most ocmbines in JC sell back for 99% of their components, so cost of skill up would basically be a .99 return on successful + complete loss on unsuccessful - this will vary for different types of combines but is consistent across JC. Please feel free to make a new line that calculates costs of blacksmithing, or whatever you're planning to do!).
You can then change your main stat and see how these numbers change!
Hope you enjoy,
Tomtee!