Zest Tea creates high caffeinated teas, and right now they’re discounting their 2 oz sampler pack (~100 servings) of loose leaf teas by 34%. If you want the sampler pack with 800 servings you can even get 47% off, but that’s if you want to cough up $250. I suggest you try the 2 oz. sampler pack for a much more reasonable price of $38.95. They claim that 1 serving of their tea equates to 1 serving for a cup of coffee. Not to mention, the tea is actually delicious and better for your health than a cup of coffee.