Lenovo has ThinkPad TrackPoint Wireless Bluetooth Keyboard II (4Y40X49493) on sale for $85.99 - $8.60 when you apply eCoupon XTRA10ACC in cart = $77.39. Shipping is free.
This matches a previous frontpage deal
The keyboard is supposed to be similar to using Thinkpad laptop keyboards and it also has a Integrated TrackPoint (red nipple).
This version has support for Bluetooth or a Wireless Nano USB Dongle. It charges via USB C and includes a USB-C to USB-A charging cable.