Is it possible to come to Australia on an eVisitor (Subclass 651) visa for job and sponsor hunting, and then apply and be granted a 457 visa without leaving the territory? Apparently, people used to do that with the Visitor (Subclass 676) visa, which required people to leave the country (for instance, going to New Zealand) to lodge their 457 application from abroad.
If not, what are the cheapest and easiest ways to go sponsor hunting for a 457 visa?