They were in production for awhile, then the Busse Company Store had them in 4 or more combos ready for immediate shipping for quite awhile...and they slowly trickled out until the very end. Only once they were gone, and gone for awhile did the demand pick up. They still pop up at shows from time to time, but the production run is done.
This is the Busse sales model. Announce them, produce them, fill the orders... and move on to the next model. That's how Busse Combat rolls.