Waveshare has put together two kits for the Raspberry Pi 400, the Pi Foundations's new keyboard-cum-computer. The kits are available with 7-inch or 13.3-inch touchscreen displays and start at US$179.99 with the Pi 400 included.
https://www.notebookcheck.net/Raspberry-Pi-Give-the-popular-single-board-computer-added-portability-with-Waveshare-Pi-400-kits.506054.0.html