Amazon India is supplying Hipoculture Leaf Grinder, the cost is only Indian Rs. 149/ or you may purchase Amazon India kitchen Bazzar Elite with the cost of Indian Rs.699/.
Your goal is to grind fresh leaves, to get the juice? What mass of leaf do you want to grind? to get what volume of juice? and how many samples to process? Currently I use a basic and manual grinder: a plastic tube cone 2ml (Eppendorf type) with a plastic pestle shaped viper head. I crush at the bottom of the tube the pieces of tomato leaves that I add in three times and I recover without centrifugation 200μl of juice for measurement of osmolarity, pH and others