It's not meant to be taken literally. If you take "less is more" literally you'd end up living in a cave; of course that's not the intent of the saying.
It's not a mistake to spend a little extra for something you need. This idiom is designed as a counter-argument to people who buy cheap stuff and boast about how they "saved" money by buying cheap crap that doesn't work well and causes you headaches.
It's not a mistake to spend a little extra for something you need. This idiom is designed as a counter-argument to people who buy cheap stuff and boast about how they "saved" money by buying cheap crap that doesn't work well and causes you headaches.