Amazon's Prime Day is 4 days this year, and Walmart is fighting back with a week of deals of its own. How to score the best bargains this year.

In one corner is Amazon Prime Day. Amazon will run four days of sales, starting on July 8 and running through July 11. In the other corner is Walmart Deals. This event also starts on July 8 but, unlike Amazon, it will go through July 13, giving shoppers two extra days of deals.

The Amazon Fire HD 10 tablet is an excellent tablet. You can read books, surf the web, and watch videos, and unlike the Apple iPad, it's less than $100. Heck, today, it's only $70 — a whopping 50% discount from its standard price. This is the lowest this tablet will go, probably even cheaper than you'll see at Black Friday.