> When I asked why they don't carry it regularly, he said that many
> 'health-conscious' consumers prefer grain-fed, because then they can be
> reassured that whatever grain the animal ate is certified as organic.
> They have less control over what the cow eats when it's out munching on
> grass that could potentially be contaminated by chemicals or whatever.

I believe grain fed meat has a milder flavor and the extra fat makes it
taste better to many people. Perhaps that is also a big reason.