Between this Chafer theology and this one besides the price and the fact that one is released and the other isn't?
The first is his 8 volume systematic theology; the second is a collection of works that he wrote before & after his systematic theology. Some of the books (like "Satan") cover material that is covered in the systematic theology, but is a fuller development than what he may have covered in the theology work. Some of the books contain subject matter that wasn't covered in the systematic theology.
Thanks.