I believe they make them in batches. You have to ask directly for the next run.
They are now on Mark 2, I have one from the 1st series. Haven't tried it yet, still enjoying my Denon 103 pro, another 3rd party modified Denon.
The one in the ad seems a bit steep even though it is a Grade 2. Mine was about $500 for a grade one (one step lower).