Lee,
At least in the Dallas, Tx area, their lower-end product lines are the ones in the retail chains. If you want Terra binoculars or a ~$500 Conquest scope, they are pretty easy to find at places like Academy Sports.
At my last Dallas Safari Convention show, Zeiss was poorly represented with Swarovski being the 800-pound Gorilla in the optics realm. It was a toss-up between Zeiss and Leica in terms of overall representation at the show though the outfitters there definitely seemed to have a preference for Leica options.
Zeiss German manufactured sports optics distribution in the USA falls way behind what a saw as a former FFL many years ago. Big retailers like Bass Pro also show a strong bias towards Swarovski and towards the cheaper Zeiss options in my more recent experiences. The dealers I know reinforce this personal impression of mine.