Promoting them as high in omega-3s is heart-healthy, and both educated and uneducated customers usually know that much about nutrition. I would worry that "low cholesterol eggs" would draw in the ignoramuses. (I, personally, hate dealing with the general public on my time off.
I once read about a 10 farm comparison of egg nutrition that listed breed and feeding method as well as actual lipid profiles. I did not see a strong correlation between breed and lipid profiles, but saw a decent correlation between husbandry/feeding methods and nutrition, in not only the fats, but also the fat-soluble vitamins.
I still feed a commercial corn- and soy-based ration, but am working on getting more mobile tractors so the flock can be pastured. If I found a nutritionally adequate non-GMO feed, I would switch.