Honestly that just makes the whole thing sound worse to me.
I mean, if it was an intentional purchase of drugs for personal use, excuses can be made. Maybe one wants to argue drug usage laws, maybe someone has a substance abuse problem and needs rehab more than prison, whatever, at least there was a decision making process behind the purchase.
But this? This is just careless. It's not like drugs/illegal items are just some item with a minor but unfortunate chance of occurring, such things are the entire point, what sort of people need to use such a service to make sales? And you're just going to indiscriminately provide them with business?
Don't get me wrong, I'm not arguing for the death penalty here, but I'd certainly approve of consequences for that sort of recklessness.