If your looking for fragrance oils, New Directions Aromatics Canada carry 2 of the 3. They also have a U.S. store. I have Sweet Champaka, smells different from Nag Champa, haven't smelt Frangapini. I've tried Nag Champa FO from another supplier(didn't like it) its not like the Satya Sai Bab Incence sticks that I burn and love.......yes I very much prefer my incense. Unless you know exactly the smell, its going to be very hard to find one that matches to what your customer wants. Hope this helps, SP