Can you recommend any affordable and reputable online engineering courses for mechanical engineers?

If you work in asset management, then consider the postgrad programs in maintenance and reliability engineering offered by Federation University Australia. Students have come from all around Australia and nearby. I worked in “MRE” for many years, and for part of that time we had students from Canada and the USA.

The program was part of Monash University at its then Gippsland Campus. In 2014, the campus and its programs were given to the then Ballarat University, which took up the new name.

Best wishes on whatever you decide.