- First assumption is correct
- Second assumption is partially correct - traders scale based upon tech/civic progress, not number previously built. Settlers and builders increase in cost by +30 and +4 per unit constructed, respectively.
- Aqueducts, neighborhoods and Mbanzas all scale with tech/civic progress but don't factor into or receive district discounts.
The cost "models" are in the XML files (Units.xml and Districts.xml).
- Second assumption is partially correct - traders scale based upon tech/civic progress, not number previously built. Settlers and builders increase in cost by +30 and +4 per unit constructed, respectively.
- Aqueducts, neighborhoods and Mbanzas all scale with tech/civic progress but don't factor into or receive district discounts.
The cost "models" are in the XML files (Units.xml and Districts.xml).

I'm not the kind of person who digs through XML files usually, still wish we had an actual manual/Civiliopedia to look this sorta stuff up in. The ingame one seems more into cracking "jokes" than actually explaining the mechanics in detail.
![[Image: 20180121170719_1.jpg]](https://s10.postimg.org/un62zif15/20180121170719_1.jpg)