This refurbished 2017 MacBook Air with a lifetime license to Microsoft Home and Business is $499.99 for a limited time. It comes with a grade-A refurbished rating, meaning it arrives in in near-mint condition limited to light scuffs. It was originally manufactured in 2017, so it may not be great for demanding software for tasks like video editing, but it should be fine for basic productivity, office work, and streaming.
It also comes with a lifetime license for Microsoft Office Home and Business for Mac, including Word, Excel, PowerPoint, Outlook, Teams (Basic version), and OneNote. There aren’t any hidden fees or subscription costs, but it does require macOS Big Sur Version 11, which comes pre-installed on the MacBook Air. You can get a near-mint condition refurbished Apple MacBook Air and a lifetime license for Microsoft Office Home and Business 2021 for $499.99 (though prices may change at any time).