But as the e-commerce site tries to encourage customers to sign up to its Prime service, retailers such as Walmart are also trying to pull in customers by holding their own sales.
Newsweek takes a look at which retailer is offering the biggest discounts on Prime Day.
Deals on Smart TVs
Deals on Laptops, Monitors, Desktops, and Tablets
Deals on Electronics
Prime Day is also a good time to get gadgets for the home. For example, the iRobot Roomba i6+ (6550) robot vacuum, which comes with automatic dirt disposal (yes, it empties itself) and works with Alexa, is reduced by 25 percent to $599.99.
In terms of price, Walmart offers the iRobot Roomba i7 (7150) robot vacuum, which works with Google Home for $586.99. However, the disposal unit comes separately.
Another vacuum brand, Shark, is also on offer on Prime Day. The NV752 rotator powered lift-away upright vacuum (with HEPA filter) is 58 percent off, pricing it in at $169.99. At Walmart, for the same approximate price, you’re looking at the Shark NV105 Navigator Light Upright Vacuum, priced at $159.99.
