In case you want to pick up a few of the locations, but don't want to spend $30 for just the locations here is a good place to pick up the older version of those cards.

www.ccgarmory.com/seaofstcosi.html

they are $0.45 cents each, number 78 (bloody keep) and 79 (gate house), there are about 30 of each right now in the store.