Recently, it’s come to light, that the “juice” of a perfume bottle generally cost under $10. See full article “Behind the Spritz”
One of the reasons for all the secrecy is the cost. Once the ingredients of a perfume are known, the cost of raw materials can be eliminated. In most cases, this cost is a small fraction of the retail sales price- a fact of life in the fragrance industry but one they’d prefer not to publicize.
From the book Big Secrets by William Poundstone