Is that the Rule of Fear book? If so, I picked that one up last night at the sale! I really love Ravenloft, so Rule of Fear certainly appealed despite the poorer recption it seems to have gotten elsewhere. Plus I was picking up the entries in the Carrion Crown AP so it just made sense to get that one too.
Thus far I have also picked up Goblins of Golarion, because I love the PF goblins, as well as Pirates of the Inner Sea in anticipation of the upcoming Skull and Shackles AP. I also picked up the inner sea map folio and the Carrion Crown map folio (Im a sucker for big poster maps of campaign settings). Sadly I was unable to get a copy of Inner Sea Magic, but maybe later.