Got a link to those "wine juice kits"? I don't drink myself, but I know it makes a fine trade good.
Wine Making
We offer a wide range of wine making kits. Choose from home wine making supplies from the carboy to the bottles, wine recipe kits, wine ingredients and additives, starter kits - and we even go beyond wine in offering mead and cider making supplies.
www.homebrewing.org
One source. But the prices have skyrocketed! Still, they really are nearly foolproof if you can reasonably control temperature, and understand basic sanitation.
There may be other sources at better prices. Maybe even Amazon with their sweet shipping deal with USPS? Shipping gets VERY expensive due to weight.
Summerthyme