River City Aquatics has good prices on corals. AquaTek is a little more expensive, but they have a "bargain bin" coral tank that usually has some good finds in it.
Alternatively you could check with members. I know that I am always up for passing around frags. I can probably hook you up with some mushrooms, a small kenya tree frag, and some pom pom xenia. The pom pom xenia may be a month or two, it is still growing back from my last fragging round with it.