But the whole argument is that buying parts/ingredients that aren't poisonous isn't enough. You still have to spend a lot of resources on testing. I think that these kinds of regulations should scale with the size of the company/revenue/profit. Smaller companies shouldn't have as great of a burden, so as to encourage competition. (There should still be punishments for them failing though. Eg you're not required to test if you're small, but you can still be punished for selling poisonous products.)