Given the quality of rose replacers I would be very surprised if a brand at those prices could afford that amount of real rose. Those brands are usually at most 150 euros per kg of juice.
I like the way you thought about this but this might be a case where that is not necessarily correct. Do not underestimate the ability of bulk purchasing power and large scale of production to be able to bring down costs. When the cost per bottle goes over 150 or 200, they can afford to start using some expensive naturals, at least in small amounts. Of course I am sure this would be heavily augmented by some synthetic rose base.
When you look at the perfumer Frédéric Malle, this is the type of person and business that would use some real natural rose in a fragrance that is named for rose, even if more for poetic reasons than actual truly logical and pragmatic ones. The French company advertises that they provide total creative freedom for their perfumers, which sounds like a much more artistic environment than other large fragrance companies.
Here, read this:
“Editions de Parfums Frédéric Malle was born in the year 2000, the product of Frédéric Malle’s determination to champion perfumery and restore it to its former glory.
Guiding the world’s greatest perfumers to the very pinnacle of their art, he grants them total freedom to create, furnishing them with exceptional raw materials, and imposing no time or budget limits and no marketing constraints.
Born into the world of perfume, with more than thirty years’ experience, Frédéric Malle is the foremost expert in perfumery today. An unconventional and unclassifiable aesthete, he offers artists the opportunity to excel themselves, encourages them to develop their own idiom, and celebrates their creativity. And so, from each collaboration, a masterpiece is born—a perfume whose creator is proud enough to sign it with his own name, for the very first time.”
It sounds like a company that might actually use real rose absolute.