The best advice I can give in regards to being smart about spending is this: A bargain isn’t really a bargain unless it’s for something you actually need.
And, everything comes with a cost, regardless of it’s so-called bargain.
Something being on sale, and marked down to only $100, still costs $100.
Even if the price is fine by you, there is still the cost of storing, cleaning and caring for whatever you buy.
By all means, enjoy your purchases, but be aware that most bargains are simply marketing ploys to make unnecessary things seem irresistible.