Well, tama naman ung binigay sayong info about PR visa and citizenship (application after 4 years) Mechanical Engineer din ako. And kung visa 189/190 sinasabi nya sayo, yep wala pa pong work un. As for the service fee wala akong idea if reasonable un. DIY lang kasi ako. You might want to check with the point system if makakakuha ka ng 60points. If 60points and above ka, you can apply for PR visa 189 or 190. you may try this:
https://www.acacia-au.com/skilled-migration-points-test.php
or you may research din. As for ANZSCO, dito ka pasok: 233512 MECHANICAL ENGINEER
Check mo din thread na to to gain more idea on Skilled Migration: http://pinoyau.info/discussion/101/general-skilled-immigration-visa-step-by-step-process/p1
Research ka muna before ka magseek ng assistance from migration agents. Baka naman kaya mo DIY lang. It'll save you a lot of money. kasi yung 120k na sinasabi nila, service fee pa lang un. Ung visa application mismo is around 120k din. Di pa kasama ung skill assessment fee and IELTS exam fee. Google is your friend. And Pinoyau.info na din 🙂 Goodluck sir. 🙂