Based upon my understanding of the source material, tobacco should be readily available in Barovia. (or at least more than if not comparable to the availability of tobacco in Renaissance Gothic earth) In addition to Sri Raji, Page #56 of the Kargatane Gazetteer #1 states:
"exotic crops also thrive in Hazlan's long summers, such as cotton, tobacco..."
Then on the top right of page #57 it states that:
"Immol engages in steady trade with Hazlan."
To compare with a gothic earth counterpart, in 1620 A.D. the American city of Jamestown, Virginia alone was able to produce 54,000 kilograms of tobacco, which would be more than able to provide 1 kilogram apiece for every man, woman, and child inside Barovia.
http://en.wikipedia.org/wiki/History_of_tobaccoYeah.... I have a vested interest to bring this up because my character Prescott Bowley has occasionally been seen to smoke a pipe, and I do not want to be accused of cheesing, as I have never been to Sri Raji.
So... light up, and enjoy!