Fighting with Mint and categorizing Amazon purchases was what initially pushed me down the path into plain text accounting (PTA).

I ended up long down the rabbit hole with auto-downloading Amazon orders (originally with https://github.com/jbms/finance-dl, but then my own custom scraping) and importing and matching them up with credit card transactions using beancount-import (https://github.com/jbms/beancount-import).

This ultimately resulted in me spending a lot less on Amazon - to the point that now doing it manually wouldn't be too bad...