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The trick that makes you overspend

When you buy a cup of coffee, you might have noticed that of the three size options – small, medium and large – the medium-sized serving often costs almost as much as the large. Given the apparent bargain, have you ever opted for the biggest and most expensive option?

This article was originally posted at:
https://www.bbc.com/worklife/article/20190801-the-trick-that-makes-you-overspend

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