Amazon Prime Day is still a week away, you can already start saving on must-have products — including multiple Roomba models that are now up to 44% off.The crowd-favorite iRobot Roomba robot vacuum cleaners are known for being a splurge, but you won't break the bank with these Prime Day deals on a number of Wi-Fi-enabled, self-cleaning models. These smart devices are reliable and convenient powerhouses that will help keep your floors clean from dirt, dust and other messes all year.