Hi Almap,
Here was my blunt logic...it's was obvious from everyone I talked to that you can't just stumble your way to a great GMAT score. I'm amazed how many people try to go it alone. I'm just not that type. There just aren't any short cuts, and I'm not the type to have left something as important as the GMAT and getting into the school I want to chance when its as competitive to get in as it is. For me, I felt I had to invest the time and money to do it right. That said, before I started out, my Aunt suggested I take Princeton Review, but things have changed so much. You don't have to break your wallet these days to do it right. You have to look around and see what the right fit for you is.
And sure, if you want to private message me, that's totally fine.
Amanda