I haven't been able to find the formula for Regrowth V, so I'd like to buy the formula or the spell from somebody. I spoke to the druid trainer in Feledan, but he/she had nothing for sale. I could just kill things for hours and hope for it to drop, but I thought I would come to the marketplace and ask.
***edit***
I found the formula at the spellcraft trainer in Kirasanct, so I no longer need to buy the spell. The dryad that wants the spell told me I'd have to get it from a druid. If I didn't need her help, I'd squish her for lying to me.
I hope you're right about the stylus.