The difference between cheap and quality Green Tea is significant

I used to drink whatever Green Tea was convenient and it was fine. Then I tried a properly sourced version prepared as an afternoon ritual and the gap was immediately obvious. The temperature of preparation at the quality end is in another category. The mental clarity was also more pronounced.

You don't need to spend a fortune but you do need to care a bit. The bottom of the market in this category genuinely isn't good enough to make the habit worth keeping.