What supermarkets and corner shops tend to sell more of is these tea based soft drinks, usually flavoured with fruit or flowers. And horribly sweet. Again, I only normally see young people drink them!
Left is rose and lychee flavoured black tea (red tea in Chinese) and right is pomelo flavoured green tea.
Blueberry Green Tea
Chrysanthemum Tea
It seems when true tea lovers want tea, they go to tea houses or markets to buy the necessary.
Tea on sale in the market.