DONE4 pricing
 

I know that CAI and BKK are the cheapest places to buy OW RTW fares, but logistically it only makes sense for me to buy them in Aus.

Given that, the published fare for DONE4 ex-Aus I believe is AUD9349, and that's what travel.com.au charges. I usually get that price and my TA betters it by a little.

I shopped around a little, and got a quote from airfare.com.au for DONE4 for AUD9099 - which seems like a bargain.

Anyone out there knows of better prices in Aus?

The price you are getting are basically the travel agents' kicking you back their commission which may cap between 5-7% less of the base fare.

You may therefore try approaching a smaller travel agency in person and try getting a deal done that way.

STA travel in Sydney have discounted the published J fares for me by 5%. It's hit or miss whether they add a 2.2% surcharge for CC payment. Strangley enough, I had to ask for the discount (!) and then justify it by saying "they did that % for me last time".