Depends. I juice up 1.5lb spinach, chard, kale, 1 carrot, and a lemon. I rarely add high glucose/fructose fruits. Carrot juice is pretty sweet. I like green veggie juices over fruit juices.

A real good juicer goes a long way. It changed my perspective the first time I tasted a fresh cup of what I describe above. Invigorating and healthy.