My family has purchased Green Pastures' Fermented Cod Liver Oil for a while now, and are interested in adding Butter Oil to our repertoire. Buying the FCLO/BO Blend from Green Pastures is hardly economical for us (we would have to buy about 3 jars of that a month,) so I am planning to buy the FCLO and BO separately. I was planning on sticking to Green Pastures, but also found NutraProInternational's BO (which is a lot less expensive). Would you say that NutraPro's product is equivalent nutritionally to Green Pastures'? I'm not sure, because NutraPro mentions using the BO for cooking, and I haven't heard of the brand before.