Kelletts in Liverpool? Or Saturn Hobbies in Melbourne, (03) 9579 7566.

I'd have thought most of the bigger/older ones would have a set of lines and a handle to sell you.

PAW in England list Staystrate line. http://www.eifflaender.com/

It shouldn't be too hard. I picked up a set of lines and reel made by VMAR(!) at the local Canberra shop.