First point - the price. Something of a sticking point for all of WotC's PDF products, full print price is too much. I only ever buy their stuff when it is on offer (GM's Day, usually). With a good exchange rate between GB pound and US dollar it works out quite cheap.

Second point - the product. Good quality PDF, if a little big for an older machine to cope with. This is a 3.0 product which means little bits of compatibility issues here and there (monster feats need re-jigging, for example). What surprised me compared to the old 1st Edition OA is how little extra needs to be done, how much more streamlined the newer (as was) rule set is to allow for the additional material.

As an early supplement, most of the stuff in here is quite conservative. None of the races have startling abilities, none of the classes really present anything that isn't just a re-arrangment of the PHB class features, and ditto the many, many prestige classes given here. The feats are largely a disappointing collection of "+2 to two skills" type feats, and you'd probably be better with Book of Nine Swords for your wuxia needs. The spells are where the flavour really takes off - not many with really imaginative new mechanics compared to existing spells, but fun nonetheless. The monsters vary in utility, with plenty of wierd nature spirits. One gets the feeling that Chinese and Japanese folklore must be replete with creatures that pose as attractive women before eating you, as there are many of this type. There is a wierd fusion in this book in that it tries to simultaneously be Legend of the Five Rings d20 and an updating of the old OA. Unfortunately, much of the old OA stuff does not fit with Rokugan, so if you want to run a 5R campaign you end up with a lot of 'useless' extras (depending on how canon you wish to be). Overall it's good fun and worth mining for ideas, just be warned that its a bit dated these days.