Top 4 Low-cost Online College Courses For Credit – CollegeOnomics

Top 4 Low-cost Online College Courses For Credit. Study.com, Saylor, StraighterLine and Sophia offer the top 4, most affordable, online college courses for credit.. Saylor Academy courses are free whereas, among the paid ones, StraighterLine and Sophia specialize in general ed courses, and Study.com specializes in upper level courses for different majors. Many US colleges accept general ed courses by credits transfer..