I would assume the amount they paid is "valuable, but not 'disabled by worm for the prize' valuable", or it's just that hard to find the larvae now. There's al

I would assume the amount they paid is "valuable, but not 'disabled by worm for the prize' valuable", or it's just that hard to find the larvae now. There's also probably a part where if someone was caught having released it in their area, they would probably be found dead in a ditch for inflicting that on people.