Looking for more 4Ks, Blu-rays, and DVDs? Add to your physical media collection with Amazon Prime Day's 3-for-2 promotion.

I've been covering Prime Day sales for years and this is the first time I can remember this type of promotion overlapping with the actual sales event days. And despite some actually incredible deals on things like Apple devices and TVs,

The retailer is doubling the length of this year’s promotion, aiming to lure in more shoppers and nab new Prime members.