Very cool game! I didn't realize this was all possible in RPG Maker. I'm addicted now, and will definitely follow your progress!
I am curious why early level alchemy is more expensive than simply buying the powders. The alchemy ingredients required to make a powder are each sold for 5 silver, so you'd be better off selling the four ingredients for 20 silver and buying a powder for 19 silver. Plus, in the case of the energy powder, selling the plants necessary to make the alchemy ingredients would get you 22 silver, which is an even better deal. Is it possible to make money at higher levels of alchemy?