I used Airroad for transporting my G-11 from Brisbane to Sydney. It cost about $80. Insurance is provided in this for new goods only upto $1000. But i am not sure if they provide extra insurance for user equipment. The goods have to be packed safely for transport. They do not pack. I created a online account on there site and was able to get a quote online, as the seller gave me accurate measurements. I think it was about 40kg all up.
For some pickup/delivery areas you may have to call for a quote.
Several other well known courier company's quoted min $200 and upwards.
A removilist company with a good reputation maybe better if the goods are Fragile. Obviously a Losmandy mount can take a bit of knocking around but a SCT OTA will not.
Link to Airroad Direct.
http://www.airroaddirect.com.au/airroad/home.sok
Regards
Fahim