All of my teas now come in 3 different sizes:
The 25 gram 'Try me' size, for those who just want to sample before committing - this size makes 10 - 12 cups.
The 50 gram 'Great Gift' size, which is terrific for sharing a new found favorite with a fellow tea lover. Makes 20 - 25 cups of tea.
The 100 gram 'I love this tea' size! Now that you've found the best tea ever and you're ready to commit, this size pouch will make 40 - 50 cups of wonderful tea (more if you are making it by the pot).
25 grams makes 10 - 12 cups of tea
50 grams makes 20 - 25 cups of tea
100 grams makes 40 - 50 cups of tea