Natal treasure
Lilia was naturally interested not only in Camila's ability but her manual, one must know that peak immortal grade things, be it manuals, elixirs, pills or treasures, were impossible to buy with money.
As the princess of the Drage family Lilia has seen how an action was made just for the sake of a pill which barely reached the standard of a peak immortal treasure, and the winning offer was a whole planet of a higher level than the Azure sky planet.
Why would someone be willing to exchange a whole planet for a pill considering that within a planet, other natural treasures might be hidden you ask, the answer is easy, even the publicly recognized as the best alchemist has only a 5% succession rate of concocting a peak immortal grade product.
And the same applies for all the other professions, rune masters, spirit blacksmiths and the like, sure you might say that with enough tries there was bound to be a success, but those fails will cost high ranked materials which are hard to find.