I lived with $0 a day during 2 years (I lived in France, in a small student room, for about €140/month) It's sustainable and compatible with a 'normal' life, I found food from: - student university restaurants, I asked the permission to collect in the bread 'trash', most bread was in perfect state. I heard this food was used for chicken farms - end of markets, I was even helping merchants in exchange of their damaged…
I seem to remember there was a polemic about supermarkets locking their bins from scavengers. Did you have any problem at the time? Was it before or after there was a change of law? Just a few more questions out of curiosity from a fellow french student: How much time a day were you expending in exchange for free food? Did you also use extreme frugality for other commodities? What motivated you to to take up this lif…
The problem appeared to be injuries (of scavengers, and the potential for the supermarket to be liable) and extra work of cleaning bin areas.
High-street bakeries used to sell off all the food cheap at the end of the day. At some point in the last 15 years - Greggs took over all my local bakeries (or out-competed them). Greggs policy is now not to sell off stuff because then poor people will buy it instead of paying full price - they throw it away instead (according to staff at my Greggs).