Should I take post-bacc classes in machine learning

Been out of college for about 3-4 years. These days due to a work project I find myself living near a top 3 university which has a continuing studies program that allows college grads to take classes for credit. I would like to take physics, graduate math and machine learning courses but they cost about $3k/course. Is this worth the cost or is it just better to stick with MOOCs?