The whatever thread

[Olive]

Growing your own's the best option. Its just that its a lot of work.

Indeed.   We are almost self-sufficient in fruit, herbs and veges, the only thing we have to buy is garlic because our crop didn't do well.  But it takes space, knowledge, a hell of a lot of work and a big freezer, also the cooking ability to deal with whatever is in season without waste.  
 
It's certainly not realistic to tell poor people to save money by growing their own veg, that presupposes that they have a garden and money to pay for tools and seeds.   We get free horse shit, which is our main fertiliser but most gardeners need to buy fertiliser.   I don't think it's actually cheaper than buying veg at the supermarket but the quality is a million percent better.