Originally Posted by gcff
I was thinking about purchasing in BKK, however, in Oz, the $9,169.00 fare would be $8,335.00 before GST (tax deductible!)

...the BKK fare seems to be around AU$6,600 and you have to get there and back.
GCFF
I don't believe international airfares are subject to GST - so it's $9,169 and not any less.