As one of its daily deals, Amazon offers the Logitech K480 Bluetooth Keyboard in Black, model no. 920-006342, for $36.79 with free shipping. That's the lowest total price we could find by $9 and the best shipped price we've seen for a new unit. (We saw it via pickup for $7 less in January.) It features 81 keys, a wireless range of up to 30 feet, and USB charging cable. Deal ends today.