I'm assuming the rarity of the soap and difficulty in getting it adds to the allure. I really like the stuff, but is it better than say, Proraso, by 6 fold? Depends on how in tune to soaps you are I guess. I don't have the experience to judge like others here can.
But hey, I myself admit there's comething cool about having a high end soap that came from France herself sitting in my medicine cabinet.