Didn't Apple used to sell a basic MIDI/USB keyboard in the Apple Stores? I think it was an M-Audio model.
Here's one of M-Audio's models on sale at Amazon for $95:
M Audio KeyRig 49 49 Key USB Keyboard Controller
FWIW, M-Audio is the one name I've seen for years on end as a vendor that makes Mac-compatible MIDI hardware. I don't recall ever reading anything particularly
bad about them.
edit: Wtf? The Apple Store is down? I guess they're preparing the Black Friday sales.
