1. Compare unit prices
Dollar stores are full of true bargains, as we detail in “21 Things You Should Always Buy at a Dollar Store.” But that doesn’t mean everything priced at $1 is a deal.
So, don’t limit your comparison shopping to online purchases or grocery-store items. Compare unit prices even at the dollar store. Determining what an item costs per ounce, for example, is generally the only way to determine whether it’s cheaper at the dollar store or somewhere else.
If you’re allergic to doing math, at least review “The 7 Worst Things You Can Buy at a Dollar Store.”