Use high-grade materials, to make some high-grade alchemic potions.
The witch knew very well what the so-called high-grade materials meant. For some magical plants, their required growth conditions are quite stringent.
The rigorous requirements resulted in these magical plants being less available in quantity.
Even if Violet, with her extravagant wealth, splurged gold coins on an alchemist, there were chances the expected results may not be achieved, even at the cost of her bankruptcy.
Because creating a successful potion meant a large consumption of materials.
This was a direct consumption, without any return.
Starting with high-grade materials for initial attempts, then making the so-called legendary potent stuff.
From their perspective, it seemed almost inconceivable. Shocked, the witch looked at Violet, thinking either she herself had misheard, or the woman before her might have gone mad.