While I was poking around online shopping this week, I noticed a great deal: Amazon has the Dyson V8 Plus Cordless Vacuum marked down to $349.99, a 26% discount off its normal price of $469.99.

The best Dyson vacuum value up for grabs right before Prime Day is the V8 Origin+ at Walmart for under $300. It was labeled as a Walmart+ exclusive until July 11 at 12 p.m. ET, but has remained on ...