B&H Photo-Video offers the Logitech K360 Wireless Keyboard in Glossy Black, model no. 920-004088, for $15.99 with free shipping. That's the lowest total price we could find by $5, although we saw it for $6 less during Black Friday week. It features six 1-touch hotkeys, 12 programmable F-keys, and a USB receiver.
Expect this item to take one to two weeks to ship.