Dunno.
I've got one that works and may already have another. But another as spare would be useful. They get used on my Ensoniq sampler and thus requires an external box which gets transported whenever I play. The drive is, unfortunately, the least robust part, hence the desire for a spare. Which is also why I've found a SCSI Zip drive I intend to make go when I get a round tuit.
However, I'm on an active Ensoniq mailing list and there are people who ocasionally go looking for (more) SCSI storage. I'm fairly sure you could easily sell all of them.
What if I buy one and tell the list I can source three more and then send you shipping details and funds to do that when there are takers?
Wade.
Q:Is it proper to eat cheeseburgers with your fingers?
A:No, the fingers should be eaten separately.