Steve Warner's Get 800 Advanced Course SAT Math Book

I don’t know anyone who bought this book but I’ve seen only positive reviews about it though they are few.
Can someone please give me advice? Is this book worth buying (it is a little overpriced I think), or is a Kaplan book enough to study? Maybe someone who bought this book can tell me more about it?

It’s okay. I own it. It’s not comprehensive enough though. The questions included are good, but the book doesn’t cover enough of the hard level concepts that show up on the test. But I’d say Kaplan is worse. If you want some hard math questions, check out Crush the Test (the website and the book…free PDF now I think too). These are harder than the real test and don’t exactly follow the format, but they really will overprepare you for those hard questions. Hundreds of free hard questions on his site too.

I’ve seen several of his books. Make sure you get the best one for your needs if you do get one. IMHO, they’re generally (including the book referenced in the title) much better than Kaplan or Crush the Test.