Looks like Jetstar is competing head to head with Virgin Blue on the same ROUTE and FARE!!! The two differences are that some are direct, while the others involve a stopover, and slightly different travelling date.

Direct, Non-stop:
Perth - Denpasar from $199
Sydney - Denpasar from $379
Melbourne - Denpasar from $379

The following flights offered via Darwin:
Brisbane - Denpasar from $299

Virgin Blue/Pacific Blue’s new routes to BALI!!

Direct, Non-stop:
Perth - Denpasar from $199
Brisbane - Denpasar from $299
Adelaide - Denpasar from $299

The following flights offered via Brisbane, Adelaide, or Perth:
Sydney - Denpasar from $379^
Melbourne - Denpasar from $379^
Canberra - Denpasar from $379^

From Midnight (GMT +8) 21 Aug 2008 you can book AirAsia X flights from Melbourne to Kuala Lumpur for only $199 including all taxes. Flights commence 12 Nov 2008.

This sale is updated to include cheap onward connections, in response to competition.

This fare includes tax and surcharges.

Booking period: 6 Jun 2008 - 22 Jun 2008

Departing from/to PERTH:
Travel period: 1 Feb 2009 - 30 April 2009
Fare : $199 one way or $359 return

Departing from/to GOLD COAST:
Travel period : 15 July 2008 - 13 Nov 2008
Fare : $199 one way or $369 return

Also cheap connecting destinations from Kuala Lumpur, as low as $17 one way.