There are a number of ways that you can tell whether a Prime Day deal is a good deal, including sites that you can visit, browser plugins, and more. But there’s another, free way, and it’s already on your PC: Microsoft Shopping. If I’m shopping around for the best Thunderbolt dock deals for Prime Day , I usually use Microsoft Edge. The reason is that Microsoft Edge has Microsoft Shopping built right in, and it displays important information like an item’s price history...

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