thanks for the spreadsheet...that's pretty awesome ! (I so love this forum)
Here's a good spread sheet. It's the average we've found. It's a good base just to figure what most people are doing. You can start a few percentage points under the average.
Flavor West:
https://spreadsheets.google.com/spr...hQ6Fu8HdEwwR2dLRUJlVjlabEN1NG1ucktuUVE&gid=26
There's other flavor companies in there too. Just look at the top and click on the one you want to see.