It is "rare" as a collector's item, especially one in good shape.
As far as a useful item, not really. OK, that was optimistic; it is worthless. A CBM Colt 10 or 20 is far more useful and takes up less space.
If you need recommendations on a hard disk controller for a 1000, just start a new thread; if you want to buy one then start that thread in Marketplace or on Amibay