Earlier quoted context omitted.
I perfectly understand her, I am in similar position despite being in top 3% earners in Czechia I will refuse to buy overpriced goods I know they are cheaper in other shop. I have 4 years old phone, wanted to upgrade for really long time, but I don't see the value in new one worth spending that much money for flagship just because I want compact phone with good camera and battery (Pixel 4A was closest price wise, but…
This is totally reasonable. However, I found that going out of her way to find a product marginally cheaper to be counter productive. I was unable to explain to her the concept of alternative cost. For instance spending extra 30 minutes to save £1-2. I mean there is nothing wrong with that if you don't have anything else to do and can be a form of entertainment, but these things pile up and that shows in her looks -…
I don't really think she would literally spend extra 30 minutes to save 1 GBP, seems like exaggeration and I also doubt she is really allocating time to those activities. She can be constantly tired more likely because she is burned out (my case, not taking any vacation in years besides bank holidays when they often bother me anyway) than because of time spent on saving money.