Normally I'd say to you to shop locally and support your local retailers, however with the US dollar nearing 90c I'd suggest buying straight from the US unless your retailer chooses to pass on the savings to you. I just picked up a set of DC X11's for AUD$922 delivered from Gulf Coast Avionics in Florida. It only took 5 days for them to arrive from Florida, yet sometimes it can take me a week to get something from Queensland !@##@$%$@
I think it's utterly ridiculous that aviation seems to be a haven for rip-offs charging any figure they feel like for gear these days.