Andrew, try the usual places like >
http://www.oatleyelectronics.com/
http://www1.jaycar.com.au/
http://www.dse.com.au/cgi-bin/dse.st...3fc0a87f9c071a
Also might like to try your local Photocopier/Fax/Printer type shops. Heaps of steppers in each unit... HTH..
L.