Bundles are a good way to get a markdown on two complementary products, and sometimes the bundle gets marked down so much it's actually cheaper to buy than just one of its components. This may only happen rarely but it results in some mouth-watering deals — like today's smart garage bundle, where the Amazon Cloud Cam Key Edition ($120 value) and myQ Smart Garage Door Opener ($50 value) can be had for just a hundred bucks, a cool $70 off.

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