Amazon Prime Day, the four-day period during which the e-commerce company offers special deals and signs up new Prime members, helped lift total online sales across America by 30.3% for the period to $24.

One more thing I found while ping-ponging around Walmart’s sale pages this week: This OB2 scanner from Nexpow. It’s going for $28.79, a great deal off its list price of $79.99, and has far more functionality than any of the $30 bottom-shelf units you’re going to find on the rack at an auto parts store. Could be worth a look!

The best headphones for most new iPhone users are at their lowest price ever at Walmart, even less than Amazon's Prime Day sale.

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.