You can find some decent deals on SCSI drives via EBay. I bought a 'set' of 2 9.1GB 68-pin drives for my Flyer, (listed as Sun workstation drives) $14.99 + plus shipping... don't forget you can get cheap 68- / 80-pin to 50-pin SCSI converters from EBay as well. The key with EBay is patience. If you need more than ~9GB the cost will be more, IME.
