Luckily, you can spend a couple dozen dollars instead. Or do the other thing I mentioned where you don't worry about soil contaminants at all. Of course, we're

Luckily, you can spend a couple dozen dollars instead. Or do the other thing I mentioned where you don't worry about soil contaminants at all. Of course, we're on a tech forum full of highly paid professionals, talking not about living frugally, but about avoiding heavy metal ingestion. Spending $200 up front to replace a weekly $2-10 recurring expense (i.e. buying those same herbs fresh from a local grocer) seems eminently reasonable for this audience if it's in the service of improving overall health.