Chris,
I don't think you can beat
www.cobraaccessories.com and call Paula 954-436-9101 for the complete
wiper assebly, drive, tubes, cables, ferrules, boxes and all for $275 or there abouts. Tell her grumpy sent you.
We have gotten them for less from the UK, but with the UK pound/Euro at 1.900456 or so against the dollar those days are gone.
grumpy