Prime Big Deal Days start tomorrow — but there's plenty more savings to be found at competing retailers. For example, Dell's "Seasonal Shopping" sale is now live and offering major discounts on new laptops, desktops and monitors.

With all the hype around Prime Big Deal Days, it can be easy to forget that Amazon isn’t hosting the only show in town. Of course, there are plenty of reasons to be excited about Amazon’s biggest sale since the summer,