Grey Wolf
Perhaps this will help:
Essential oils
Aromatic liquids extracted from flowers, grasses, fruits, leaves, roots, or trees. The oils maintain the odors and tastes, and thus the essence, of the plant they are extracted from. The extraction process would be distillation for flowers ie rose, lavender, mimosa etc.
Cold press distillation would be used in the case of Orange, Lime, grapefruit.
While solvent distillation would be use for extraction from resins like frankincense.
Fragrance Oils are Fragrance oil(s), also known as aroma oils, aromatic oils, and flavor oils, are blended synthetic aroma compounds or natural essential oils that are mixed with solvent, some manufacturer use filler with a carrier like vegetable oil or mineral oil.
Just as all soy wax is not created equal, not all fo's are created equal and that is why we see folks complaining about lack of scent throw with some of the fo's they are using.
Both eo's & fo's are used in perfumery, cosmetics, flavoring of food, and in candlemaking.
Eo's in candles have a strong scent when they are cold but once they are lite the oils do not have a strong scent throw. These are used in spa's often, for many folks with allergies, purist that want nothing synthetic in their products.
Please note there is a great deal of hype in the eo market also.
Beeswax is wonderful by it's self without scent, IMHO. I find my European customers are more inclined to use Eo's or FO's in beeswax candles than in the US. Beeswax has climbed in price like most other things because of the shortage of honey bees and a decline in wax availability.
My personal theory is do what you love, do it well and the money will follow.
Perhaps not right away.