Yea, when I decided to go for the full set I got a little hesitant!
There is a guy in Germany selling them, only has a few of each. I'm not sure how he got them, but I'm confident in his sources.
Well, I had quite the disappointment when I bought the whole Heroica Ilrion set just to get those figs that were not yet on Bricklink only to find issues with the printing, but the Lego store was amazing and helped me get new ones. I think that added a lot to the Vampire being my favourite figure, he is so regal looking!
Thanks! I think I'm going to find a way to make a long display to go over or under our TV once we mount it to the wall in our new apartment :D