That's not a huge drop from the $130 price of the full MX Keys, but it's on par with the no-frills Magic Keyboard.
The MX Keys Mini is available now for $100 from Logitech and Amazon, in dark gray, pink and silver colors. USB-C fast charging will help if you need a few more hours of typing in a pinch. The Mini supports Android, ChromeOS, Linux, iOS and iPadOS using either Bluetooth or a USB receiver, with pairing for up to three devices. There are even a few new functions you won't get in the larger keyboard, including a dictation key for Macs and Windows PCs, a microphone mute toggle and an emoji key. The MX Keys Mini doesn't include a number pad or other perks from a full-size keyboard, but it does preserve the 'Perfect Stroke' system that combines non-mechanical switches with dished keys that can improve your typing accuracy. It just introduced an MX Keys Mini wireless keyboard that shrinks the original MX Keys design into a tiny, minimalist footprint. Logitech might have a more viable alternative for some people, however. You haven't had much choice for compact keyboards these days - many of them are mechanical keyboards aimed at gamers and hobbyists, and Apple's Magic Keyboard doesn't make much sense for non-Apple users.