Bison is a scarce product and premium grass-fed bison is the scarcest of the scarce. In fact, we need to say that it may not be available year round. Premium grass-fed bison is most prevalent in the fall, so you may want to stock up at that time. The health benefits from bison are excellent and from grass-fed bison they are even better. We recommend that you call our toll free customer service line to confirm product availability.