You can find many Zodiac birthday cards on line by doing a simple search. If you are looking for a more traditional card, you can find in most stationary stores
I'm positive there are sites on the internet which offer printable Zodiac cards. "Alternative" stores that can be found in a mall/shopping complex may also have what you're looking for.
Zodiac birthday cards are not that rare. They can be bought from any bookstore or greeting card store. They can even be downloaded or bought from the internet.
