Cheapest graduate courses per credit

I have a list of courses I need to take and the only requirement is that they are from RA schools and they have the right prefixes (e.g. ENGL, GEOL, HIST), so I can take pretty much what I'd like from whatever school. I've been looking at some inexpensive programs in New Mexico, but these are all undergraduate credits, and as I've got my BA, why not take graduate-level courses (perhaps they have more value for me in the future if I decide to apply them toward a MA).

So, do you know which schools offer the cheapest graduate credit price for non-resident, non-degree seeking students for distance courses?

 

Two schools come to mind - Western New Mexico University and Adams State College; keep in mind that most schools will allow a limited amount of transfer credit and if the credit is over five years old it is usually not accepted as credit.

 

Here’s another one…

University of Nebraska-Lincoln (Extended Education & Outreach):

HIST875 History of Brazil: $787.50 (3-CH) UNL'S Distance Education Store - HIST875: History of Brazil