Just a mention I want to make.
Rod and Staff has an excellent curriculum, and their prices are quite reasonable.
They are truly a no-frills curriculum. You don't find full-color cartoon characters in their books! (Hahaha) They are very basic in their publications.
However, if you want a good solid foundation for English and Math (I have not seen the other subjects), then this is for you.
Learn more at www.rodandstaffbooks.com.