Wanting to splurge on Black Friday tomorrow? Think again.

The American holiday tradition, held the day after Thanksgiving when everyone is off work, has travelled to all parts of the world, including New Zealand. It is now seen as the start of the holiday shopping season. 

However, research from the UK found that the sale isn't as good as it seems.

Many big chain stores there offered similar or cheap sale prices at various other times throughout the year.

Researchers warn to be careful before adding items to your cart.

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