I'm about to put two CA-880 external floppy drives up on ebay, unless someone here wants to make me an offer. The auction will be for both together, but I'll sell them separately if you want. I'm pretty sure they still work because I tested them on an A1000. I even blew canned air through them and put a head cleaner inside for a few click-click-whirrrr cycles. :-)
-edit- I put it up on the classifieds, so you can see the picture when it gets verified.