Roomba vacuums were heavily discounted during Amazon Prime Day — here are the deals we saw last year

· Amazon Prime Day is Amazon's big sitewide sales event that is anticipated to take place in mid-July this year.
· We'll compile all the best deals across tech, home, kitchen, and more for Prime Day 2020 when they come out, but based on last year's sale, we expect to see a lot of discounts on iRobot robovacs.
· Since Prime...