For me, eating healthy and exercising routinely requires a lifestyle change. It almost seems contradicting, but if I am going to consistently eat healthy, it needs to consume a larger portion of my life. By sacrificing the money and time to choose and buy vegetables/fruits, prepare, and consume them , I am more likely to continue this process because I don't want to waste that sacrifice.
So for me, products like Juicero that reduce the healthy part of eating to a sacrifice-less convenience would make it a novelty item that wouldn't force me to change my lifestyle and therefor fail to create consistency and tenacity in my healthy eating habits.
From my buying perspective, this product would be just grouped in with the other 'magic' pills and 'get-rich-quick' solutions to becoming healthier.