Logitech offers the Logitech K750 Wireless Solar Keyboard, model no. 920-002912, for $39.99 with free shipping. That's tied with our mention from two weeks ago and the lowest total price we could find by $20. This wireless keyboard is powered by light and measures only 1/3" thick.

Of note, this is a "dented box" unit; although the box may be scratched or dented, the contents are new with a full Logitech warranty.