Beware migration agents and "experts". They are selling an expensive product with no guarantees. I've always dealt directly with immigration, including being a 126 migrant myself many moons ago and now a sponsor for 420 visas. Once you find a tame immigration officer it is pretty straightforward and can save you a fortune.
I came here through other skills, converted my UK CPL and intructed part time for years whilst doing the job I was accepted to do before instructing full time.
I had a young lady came to see me today (on a tourist visa) with a brand new JAR CPL and about 200 hours looking to convert to Aus who had been told by a migration agent she would have no problem getting a 457 visa for an airline job...
Also saw this on google:
Flying Instructor Jobs in Australia - Migration Expert Australia
[website redacted]Migration Expert Australia - Visa Service & Advice Online[/url] › Visas to Australia › Jobs in Australia
Flying Instructor Jobs Australia - Australia seeks Flying Instructor to live and work in Australia. Great working conditions and salary
Beware!