There will be plenty of Black Friday deals, but not all of them will be worth the hassle. Which items should you buy and which should you avoid?

WalletHub compared pre-Black Friday prices to the advertised Black Friday prices to determine which items have the biggest discounts. The study showed that books, movies, and music were marked down the most--approximately 28%--while video games and toys had an average discount of 22%. The research also showed that there were minimal savings on items such as furniture and jewelry.

Think before you shop. Ask yourself "Are those Black Friday prices worth the wait?" Get the full report here.

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