Amazon's annual multi-day mega-sale is going to be more multi and mega than ever, running four days from July 8-11. We've got all the details on the best deals and top ways to save.

GrubHub+: $10 off $20+ @ Amazon Normally costing $10 a month, GrubHub Plus is free for all Prime members. Through July 7, use coupon code "PRIME10" to save $10 on orders of $20 or more. The code can be entered during checkout.

Amazon (AMZN) recently made a major announcement about its popular Prime Day, the e-commerce giant's annual shopping event, during which the company offers various deals across a wide range of product categories exclusively available to Prime members.