Logitech K760 Keyboard for Thirty Bucks →
I paid full price ($70) for this keyboard a year ago and love it. It has solar charger so I never need batteries and it pairs with three separate bluetooth devices. I use it with my iMac, iPad, and iPhone. The keyboard feels like an Apple keyboard but the keys are slightly concave, which is nice. For a short while (I believe this ends tomorrow) it is just $30. If you are looking for a versatile keyboard, you'll like this one. Thanks Chad for pointing this out.