I forgot to mention, that I was looking for one without the number pad. Apple also stopped making the USB/wired mini-keyboard. A few are available on eBay or Amazon Marketplace.

I saw one $50 brand-new wired mini-Apple keyboard on eBay from one seller, but there is always the chance it might break down. In which case, I would have to go back and buy another one... probably when the prices have gone up.