Hi I bought this lens a week ago. Checked out prices all over the world - looked at grey imports. Tossed around pros and cons.
Best prices I could come up with dealing with people in Aus were from -Digital World International (overseas stock), NG (Night Grooves??) in Queensland - Fabian was great, very helpful and is an AP sponsor and Michael's Camera Store in Melbourne. Michael's ended up cheapest Aus stock and was easy because I could collect it so no postage and insurance costs. Have to say I was very surprised as I had presumed they would not be price competitive. Ted's and Kirk's were certainly nowhere near the price I paid.
It's frustrating and slow but is worth doing your research.
Good luck and I'm sure you'll love the lens!
Hope this helps. Cheers.