I think in attempting to be frugal though some people can actually spend more. While the minimalist will get one of something and probably go for a good one to last the person being frugal might go for the cheapest one, or buy a set of cheap things covering themselves for bad quality, they may end up spending more in the long run when things don't last.
I love some of the frugal websites that are completely focused on price. You get list after list of special offers where you can get stuff for next to nothing but it's all utter crud. Some items, however cheap, are a false economy.