This is a regular course at University of Missouri-St. Louis and you may be able to transfer it into your own degree program; needless to say, check with your adviser. To do this, you would enroll as a visiting student.
You can also enroll as a non-degree student if you are simply interested in the subject and are not taking it as part of a degree program.
This is a 3 credit-hour course. Tuition is $265.60 per credit hour for Missouri residents and residents of 22 counties in western and southern Illinois. Out-of-state tuition is $717.90 per hour. You will need to check what other fees may apply (there is a supplement for online courses; beyond that, I am uncertain).
If you are interested, you will need to apply as a visiting student or non-degree student. See here for more details on the admission process. Feel free to contact me at kpthomas55@hotmail.com if you would like more information.