A friend linked me to ScoreTop, a GMAT help site. I think it’s run by GMAT-ers from India so you know they must have some good stuff. They have a VIP section that has a lot of practice questions, probably more than you’d ever really need. The word of mouth review is that it’s a good place to drop $30 (VIP), but I’ll wait and see how I do using the materials I currently have.
http://www.scoretop.com