I don't see how the Glowi is a bad business deal. If Williams estimate is right each crate is worth 2500 GP. There are 15 crates of the stuff. That is like 28000 GP profit. So where did Gheedon get the root? I think Ahsa is going to become a merchant with those kind of profit margins.
If anyone wants to make me a nature roll to see what they know of the root it may get you some idea of who's buying. A straight Int check will decide if you know anything about the glowi's market value.