I've got a G-Tech G-Raid I'm looking to sell. Works great, always has for as long as I've owned it, makes a great backup solution, and the RAID over FireWire 800 is really fast. Also has FW 400 for those without the higher speed port.
320GB capacity, can always toss in larger drives if you need more space, I didn't.
Asking $125 shipped/insured/tracked.