You don't just save money when you buy an Amazon Fire tablet or Fire TV. While these products are eligible for the same price discounts as other Prime Day deals, Amazon is offering the Disney Plus bundle for free for three months.

The Disney Plus bundle combines three Disney-owned streaming services. In addition to Disney Plus, the bundle includes live sports from ESPN Plus and ad-supported TV and movie streaming from Hulu. Normally, this bundle is $19/month, so we're talking about an additional $57 worth of whatever price Amazon takes off the tablet or TV streaming device.

A quick look at the Prime Day streaming deals shows that the Fire TV Stick 4K ($25 off) and Fire TV Stick Lite ($12 off) are both eligible for the Disney Plus bundle. Amazon's newest tablets, the Fire HD 8 and Fire HD 10 and their Plus versions, are also eligible for the Disney Plus Bundle. This deal is not included with the Fire 7 Kids and Fire HD 8 Kids.

Amazon is not the first company to recognize the benefits of adding Disney bundles as an incentive to get people to buy their products. Verizon, for example, offers Disney bundles as a benefit of its wireless plans. For the most part, Verizon plans include a six-month trial of the Disney Plus bundle, but the Play More ($80 per month for one line) and Get More ($90 per month for one line) options include full subscriptions. This is a bit more generous than what Amazon offers here.

Still, a three-month trial is a pretty good perk. If you're on the fence about buying an Amazon Fire tablet or Fire TV streaming device, perhaps the inclusion of the Disney Plus bundle will be enough to make you decide to buy as Prime Day comes to a close.