Zenigen

You can easily farm ~400 ore and ~400 herbs per hour (800 total!) in this area. Easiest money you'll ever make while the prices are as high as they are. It's even about 1mil XP per hour which isn't too bad considering you're doing it while watching Netflix or something.

https://preview.redd.it/mnus8qz9ze2d1.png?width=386&format=png&auto=webp&s=db2b3ab64d8373cdd21a001e043896006587cabd