Many of these offers will claim to be great deals, with the implication that not buying the item during Prime Day will mean you miss out on massive savings. But not all Prime Day deals are really all that great—just because a product is discounted on Prime Day doesn't mean it hasn't been cheaper before, and won't be cheaper later. You May Also LikeHow to tell a good Prime Day price from a bad oneOne of the best things you can do to tell if a Prime Day deal is legit is to employ the use of a price tracker. Amazon’s own products will have the best dealsIt’s Amazon Prime Day, after all. If the reason a device is such a good price is because it’s obsolete, that’s not a good deal.