Direct Hits Vocab for Kindle?

<p>I heard that the Direct Hits books were the best ones to be studying vocab from, but I don't really want to pay so much money :(
I tried to find a kindle version of the books but the only one I found was this: </p>

<p>Amazon.com:</a> Direct Hits Core Vocabulary of the SAT 4th Edition eBook: Direct Hits, Ted Griffith: Kindle Store</p>

<p>Is this the same as Volume 1?</p>

<p>Thanks!</p>

<p>I have the kindle version for the 2011 edition. It is the same one as the book</p>

<p>I used The Essential 300 Words (ebook) and Barron’s High Frequency Words and pretty much knew all the vocab words on both the January and March SATs.</p>