Just tried this. Spent 500g to buy all the herbs I could under 2g per herb. Made the BoP's, sold the Bop's. How have 468.75g, and 17 starlight ink. I think the 17 starlight ink more then makes up for 31.25g.
TLDR: This works, even at 40g a stack if you consider all the rare inks you get. Thanks for sharing this OP.