Solarpunk

This works for fruit juices, too. Even most 'real' juices are created from fruit concentrates. You can just cut out the middleman and get the concentrates directly. Even including the sugar/invert sugar you gotta put in, it costs less than half as much. And you control the amount of sugar you want. I use them extensively.

Just search for concentrates or soap bases on amazon. They all have guides on how to prepare them. I usually also just look up the main/active ingredients in the products I use and just order that.