sydney90,
The staff benefits are very comprehensive. I can't tell you the prices but they are extremely low and with Virgin you have staff travel access to many of the partner airlines. You also get access to discounted hotels, insurance, cars - basically anything to do with travel. Also many companies give discount to the many Virgin brands in Australia and there certainly are some good perks there.
The Bali flights are done by all "wet lease" trained crew across Australia. These flights are currently operated by Virgin Australia for Pacific Blue and only crew that are trained for wet lease international operations can do them. All crew are entitled to complete this training and be able to do these lines of flying.
With the brand restructure the Bali and Phuket flights will soon become just Virgin Australia flights and no lounger under a wet lease arrangement. Honiara is also now a Virgin Australia flight and no longer operated by Pacific Blue.