Oh it would be fascinating to learn from you to travel without spending too much @mrprofessor
After reading your publication I noticed that you made reference to barter, we in my country Venezuela had stopped using it almost 100 years ago, but now more than a fashion is a necessity since our currency is very devalued.
Even the teachers in the schools, as the salary is not enough for them, some people give them 1/2 kilo of food to subsist.
The issue is what happens on the other side of the street, people who do have money and have new clothes, they throw it away, they waste it, they are miserly, they live in big houses and have several cars, that is also happening here, a balance is needed...
It was nice to read to you.