This feels like another case of internet shopping confusion. That and forgetting elementary school physics, I guess. Tea leaves are really not that heavy, and so 1 pound of them would mean a much larger bag than 1 pound of sugar.
Raspberry leaf tea is only supposed to be drunk at the end of pregnancy, as one of those old wives’ tales that people use to try and hurry the baby up. So, this mom-to-be is going to have to drink an awful lot of tea in a short space of time to get through this bag.