It IS a lot of vegies, and I'm lucky I have two refrigerators because one is full of my juicing stuff! We live a long way from a store, so I have to buy in quantity.
I've found that when I have a big glass of my juice in the morning (before any coffee or anything else), I really don't get hungry until around lunchtime. In the past, I would start wanting to "graze" around 10:00 or so for some kind of snack. Don't get that with the juice.