BIY always has a great selection of yeast available, and we even carry most bacteria strains too!  We stock all the dry varieties as well as White Labs and Wyeast liquid strains.  Because the liquid strains have a much shorter shelf life than their freeze-dried counterparts, we tend to keep bulk stocks of liquid strains to a minimum--ensuring you get the freshest yeast possible.  If for whatever reason you don't see the Wyeast or White Labs strains you are looking for--please contact us by email or by phone!  We are very happy to get the exact yeast you want on our next yeast order with the lab!