Some major retailers raise the online prices of certain goods days or weeks before marking them down in seasonal sales events, the NBC News Price Tracker shows.

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Amazon has its own line of smart TVs, and this 40-inch model is marked down more than 30% ahead of July 4. It offers high-definition 1080p resolution, and it's equipped with the brand's Fire TV streaming platform, which gives you access to live TV, video games, and music, as well as apps like Netflix, Prime Video, Disney+, and so on.