@Flashfyre
The 'Elvenar chapter' is Ch15 (yes, they named a chapter 'The Elvenar'
@ElfGunn
Though Gems still has 'preview' next to the guest race chapter, the chapter information there is complete and remains accurate afaik. Underneath 'Academies' on that page is a table with a top note stating:
"A total of 265,000 Ideas and 265,000 Workforce will be required
to unlock the next three production buildings." (bolding is mine)
I can't remember if that is for unlocking the techs or upgrading bldgs.
Further down the page, a table is available of the costs of all the research techs for the chapter, and there are columns at the end with guest race productions, but I can't remember what the small icons are. Is that where you're seeing a different number for Ideas/Workforce?
You can use this
ElvenArchitect Research Calculator to verify the research costs for the chapter. This won't include costs for upgrading the guest race buildings, but may help you suss out what each section of the Gems guide is talking about. At the top of the page, select your race and the Elvenar chapter and click load. Mark any of the research techs complete that you have done; the calculator then tells you the amount of each resource needed to complete the remaining techs in the chapter.
Sorry I can't be more help. This is where I got really tired of slogging through chapters. I wanted the 3* troop promotions, so I suffered through it in both cities by using PP's. I never even built the Vault of Wisdom since it was only needed for capped goods.