I completed the Sherwood Test Prep GMAT Course in California earlier this year. It is a lower cost course, much lower than many other programs, about 1/3 the cost of others. It was a great course, especially for the money.
You get the OG, and you have a variety of topics in class, math, stats, grammar etc., but mostly strategy and attack plans. I learned a lot from the instruction, especially the math, where I was weakest.
Hope that helps!