A variety of robot vacuums are steeply discounted on Amazon right now, but it helps to know what to look for so you spend your money wisely, and I've picked four to help you get started.

Just AU$5 more than its all-time low price and now matching the Paperwhite's RRP, the Kindle Colorsoft is definitely worth it for AU$299 and arguably better value than the 6-inch Kobo Clara Colour.

Hurry, Amazon's Mid-Year Sale ends June 7 – save on smart home devices, phones, tablets, headphones, cameras and more before the sale ends.