Before you go grocery shopping again, know this: Supermarkets are designed to make you overspend. Case in point: the average grocery bill is 60 percent impulse buys. So, here’s how to spend less:

  • We'll start with something that really surprised me: In aisles with pricier products - like fancy cookies or organic produce – they use smaller floor tiles. Why? Because the wheels of your shopping cart click faster and create a false sense of speed. So you slow down and spend more time looking at the products. The more time you spend looking, the more likely you are to buy.

  • Another trick to make you spend: Strategically placed mirrors. Research shows that consumers will pause to look at their reflection - and examine nearby merchandise.

  • Next: The higher-priced products are on the right. Studies show that we tend to scan shelves the way we read – from left to right. As your eyes pause on the far right, you’re more likely to reach for what’s there, especially since you’re probably reaching with your right hand. So, before grabbing anything, look to the left once more. Retail researchers say that one quick glance could save you 30 percent!

  • Another grocery spending-trap: Irregularly-shaped containers. Studies show that products that come in tall or unusually-shaped packages often appear bigger than they are. So you think you’re getting a better deal. For a more accurate value, compare the unit price – that’s a fancy way of saying the “cost per ounce.”

  • And the final trap: Weekly grocery store circulars also contain non-sale items! Manufacturers pay big bucks to put regular-priced merchandise in ads, because a mere mention increases each product’s profits by up to 500 percent - even if the item’s not on sale!