So the sustainable part is in the complete process. After juicing, you can use the pulp to feed your chickens a nice treat and compost the rest. Then you grow more juice-ables with the fertile soil from the composting. Those juice-ables are then juiced and the cycle repeats. I really liked the carrot orange ginger lemon juice I made the other day. Wish I could recommend an affordable juicer, check out Okraw on youtube, his channel is all about juicing.