are you just looking at your rn, or are you looking at the bsn as well? i was very confused when i got started too...for the rn program, the cost of the class is the cost of the exam you take at pearson plus whatever resources you choose to study for that exam such as textbooks, practice exams through ec, study guides through other resources. so, for example, my microbiology class has cost me (so far) $342.95: pearson exam, practice test, textbook off of ebay, study guide 101 notes. so, all in all, it won't cost me much more than my local community college. you cannot use title iv funding for this program because of the self-paced nature.
once you get your rn and go for the bsn and beyond, the classes are "traditional" online classes with meeting times, assignments and such, so you will pay for the class by the hour. those programs are also eligible for title iv funding.
hope that helped clear things up a bit!