Producing high-purity plastics that don't contain any of the many usually toxic ingredients is quite difficult and requires finely tuned and monitored processes

Producing high-purity plastics that don't contain any of the many usually toxic ingredients is quite difficult and requires finely tuned and monitored processes. There is a huge price differential between plastics used for consumer garbage and e.g. plastics used for industrial piping and fixtures (when they're nominally the same plastic) which is gladly paid for.