Groupon have an online course deal for $49. This is an accredited course that usually costs $1600. It is for online only.
Terms on their site. Could be a great one for users needing to re-evaluate their eating habits.
Course consists of 10 modules and says it is a Diploma. Although you will need to read the terms to find out the specific details, most likely a certificate exam.
Course details here: http://www.shawacademy.com/nutrition/course-details.html