Signs may say "10 for $10," or "2 for $5," but in most cases, you get the same price if you buy only one, says Carrie Kirby of the blog Frugalistic Mom.
Not every item pictured in store ads is on a large discount -- in fact, sometimes an item pictured in the ad costs more this week than it did last week, she adds.
Deals that offer "seven for $5.50" are designed to confuse shoppers who aren't quick with their mental calculators. The same trick applies to the now popular 10 for $10 game making the supermarket rounds, says Woroch.
Keep your guard up, always, and do your own math.
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