Early Prime Day deals include $37 off our favorite air purifier
Engadget has been testing and reviewing consumer tech since 2004. Our stories may include affiliate links; if you buy something through a link, we may earn a commission. Read more about how we evaluate products . We now know that the 2025 edition of Amazon's blockbuster Prime Day sales event will start on July 8, and it's set to be bigger than ever as it will run for four days. But you don't need to wait until then for tasty deals. There will be plenty in the lead up to the event, including thi