Okay here's the skinny on GMAT test prep - Veritas is affordable, absolutely thurough and probably the best instructor I have had since college. They provide you with every resource to succeed. You are given complete books, homework help with actual people, writing reviews, a tremendous amount of free practice tests and the list goes on and on. I looked at every other test prep provider and I am so glad I chose Veritas. It was excellent. If you are going to take the GMAT I highly recommend this course.
Pros: Thurough - Great Instructors, Books, Study Aids, Help
Cons: The instruction is online