It was cheaper to buy two, one pound bags, than one, two pound bag.
Do I save a lot of money by reading the tags?
You betcha'! It's always good to look at the price per unit and determine what makes more sense. Why would I spend more money on the same amount of product?! I also find that by buying the smaller size of a product and using the coupon on it I decrease the cost. If I buy a smaller tube of toothpaste, but get it for free isn't that better than buying the larger tube and getting it for a dollar?
No matter what you're buying always take a quick peek at the tag--taking 10 seconds to do the math could add up to saving big bucks over the course of a year.