But from what I've noticed, most people don't keep track of how much money they have, how much they're spending and how much they need...
Sometimes I visit a store on my own and make purchases there. But I can't even tell you the amount I spent 5 minutes later. The same applies to the cost of individual products that I buy. I understand that in order to save money, it is better for me to shop with my wife, who knows all the prices of the products that interest her.