If you're patient, you can find it on eBay at reasonable prices. I bought mine a few months ago for under $20.
It's kind of its own system. I don't really know how to compare it to anything else. You can get an idea, though, by reading the LWB translation that Padma so generously did for me here:
http://www.tarotforum.net/showthread.php?t=250366 There's also a more recent version of the deck called Tarot D'Eltyne. That version has different art (most of which I really like, except for the people, who all look like anime characters), but the same interpretations. You can read about that here:
http://mandefield.free.fr/eltynne_en/
I also got the sense from the LWB translation that the deck is very flexible and can work with a variety of methods. I've been experimenting with reading it much like I read Lenormand, and that seems to be working very well. But I think it can work more like other oracles do, too.