the Garden of Eden on 14th St has it (near the tofu, which is in the produce area) but I dont know if they take coupons, and the Whole Foods at Union Sq has it too.
i went to both of these places today and went through the entire stores, literally shelf by shelf, and i couldn't find it or a shelf marker for it, and none of the employees i talked to could remember ever having seen it. :( frustrating! i'll keep trying, though. thanks to everyone who offered suggestions.