B&H Photo-Video offers the Logitech K750 Wireless Solar Keyboard, model no. 920-002912, for $38.99 with free shipping. That’s a buck under our September mention and the lowest total price we’ve seen, excluding refurbs. (It’s a current price low by $10.) This wireless keyboard is powered by light and measures only 1/3″ thick. Note that this is not the Mac-compatible version.