@georgie
Hello po! About sa AIMS Assessment it is done in two stages, first is document assessment, that would be $700 na then if you are asked to take the Professional Exam to be classified as a Medical Lab Scientist, after the assessment has been completed, that would cost another $600. With the visa application it would cost around that price range you have said provided you won't have any dependents to declare and are coming with you, plus the medical expenses once you are asked to provide your medical details in the application.
I guess yung mga visa na need ng declaration of funds are those that are State Sponsored Visa (190 and 489) and it depends largely on the state kung how much. You can look for this information sa government state websites.
Ok sana yung may agency, advantage siya dun sa may mga busy schedule to process their applications and if may extra money for their fees.
Hope this helps! Thank you!
Reinier