Agree with bama. I have a Robar factory model that I was fortunate to have purchased from this forum. I received unfired gun with papers and warranty intact.
I also own a standard two tone R9, that I do not shoot or carry. If I were concerned about preserving value, the Robar would be the "safe queen". However, I love the one tone gun and the trigger on the Robar is perfection.
I don't have the factory inside story as to Robar model discontinuence. However, I would guess that factory finds it easier, and more cost effective, not to deal with "special guns". Witness the demise of custom R9s across the board.