There are hundreds of Essential Oils, just as there are hundreds of plants in nature.
But not all oils are the same, not all plants have the same properties, and even within the same plant, there can be extractions of different oils, with different properties and different benefits/risks.
This is why a specific essential oil can be quite expensive, due to the need for specific raw material or the rarity of the plant in question.
Making essential oils is like making wine. Do we only use grapes, or can we use everything?
Thus, we clearly have different results.
We can use native plants, found in nature, often seasonal, or we can use greenhouse plants, grown anywhere or in intensive production. (Eating an apple from an orchard or a greenhouse is not the same thing, is it?)
Thus, we clearly have different results.
With the same plants, we can try to extract multiple times, which clearly affects the quality and the benefits extracted throughout the process.
Does all this make sense to you? 
I am at your disposal to help you understand more about this wonderful aromatic world 🙂
