Firstly, I have to agree with the reviewer before me.
"Maybe not for everyone" is a very accurate, although slightly negative, tag line. This deck is beautiful in a dark, pleasantly-disturbing and surreal way, but to my view, that is where the appeal lies.
Patrick Valenza writes that the "Deviant Moon Tarot sets imaginative characters and evocative tarot imagery against moonlight backdrops. The stunning surreal artwork illuminates the darker side of the psyche and reveals the depths of human consciousness.", and this is precisely what it does.
The cards are standard size, and nicely coated with the promise of some usage. Attractively boxed, with a 10-card spread (paper) mat, and the usual accompanying book describing the meanings, with the addition of an insightful prologue sharing the inspirations of the artist and how the deck was created.
I haven't spent any respectable amount of time, since I purchased this item, using it, but on the occasions that I have, I found it easier to draw darker conclusions than I usually do from the Rider-Waite, or my other, lighter, decks. However, that said (and I'll admit that the imagery does help you to think like that), it gave me no reason to suggest it wasn't totally accurate. For a semi-abstract deck, it is both evocative and readable, which are the two major factors in tarot design.
Definitely worth your money, if only for the artwork.