In the past I have purchased every limited edition blu-ray that funimation has out out. I'm wondering if Blood-C might be the first I don't. I was surprised at the reviews on amazon as you usually don't have as many bad ones before something even gets released.

IMO, it's pretty bad. See this recent thread, it sums up the interest fairly well. I'm a bit interested in the movie though (it has gotten much better review than the TV series).