Reiterating that the gold-per-second becomes inaccurate at (pretty sure) the 70Bgps mark, with a sudden jump in actual gold increase, not reflected in the scrolls.
Testing now. Warehouse shaves off approx. 3-4 minutes from startup time. It used to be that the game reached a "tipping point" at about 100m food where I could easily achieve exponential growth. I would suggest having the warehouse not stack between different uses, and providing a ~10x bonus instead of a 2x bonus
The "income jump" just happened to me without my having bought any upgrades, after my income per second reached 50b-70b per second. In practice I appear to be gaining about 10t per second.
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 "Aground"){kind=icon}
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This is planned - I'll be adding another NPC (or maybe I'll just make the trader give you tips).