Yes, the $129 model is called "the original", and is the very first HHK.
It supports supports Mac-ADB, Sun-SPARC, and PS/2, not USB. The key
touch is softer yet definite. I've been using the original model for
quite a while now, and I just love it. My hands will never want to let
go off this keyboard.
Our beta users say the Professional is a better version of the original
$129 model with USB interface. Unfortunately, I have not yet used the