IMO this is the best green tea out there, Sencha Have been drinking it or years now https://www.amazon.com/gp/product/B000OK2AG8/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
That seems like a decent price for 100 tea bags and it has 800+ reviews with an average rating of 4.6 out of 5 stars.