You heard correctly, there will only be 600 pieces of each edge configuration. They are completely sold out from us. However, we've only shipped about 2/3 of them. We have one last batch to ship from us to our Dealers/Distributors. So, you will see them come back into Dealers, but I'm sure they will go very quickly.
Sorry for the delay in replying... I'm in DC right now for a law enforcement conference. I'll be honest and say, I'm half asleep right now. So, please forgive any typos and the fact that I can't recall when the last batch is due in.
Hope this helps.