The ISI Skaters and Coaches Handbook is on sale for $10, down from $25. It's the 2010 version.
http://www.skateisi.com/site/contentpdf/PubOrder.pdf
Their Test Standards DVD is $20. At the ISI-PSA Conference in May 2011, one of the speakers said that video of each dance step sequence is included along with the required elements.
I like ISI, I wish there was a rink nearby with ISI. They're so organized and affordable.
Although I have converted to liking USFSA Basic 8.