My father always says : "saving money is the beginning of being poor". So I always try to save money by thinking how can I make more. These days money = time is a strong equation, so just don't loose your time and use it in a way to make money. Stop thinking about saving money and spend your thoughts on revenue stream. That's why I rarely use services like that and don't count the pennies ( I'm neither rich nor bragg…
That said, a lot of people are completely stupid with money. Some people will try to save money by cutting expenses everywhere and then, for example, proceed to overpay €10-20-50k on a house. Or not negotiate high random fees, ever.