The people that manufacture are several levels away, so they aren't as affected as, say someone who sells it to the same 50 or so people every week/day or whatever.

The point of my post was to let you know how easy it would be to accidentally kill someone due to mismeasuring the dose. Calibrating a scale before and after measuring a dose then verifying with a second method is something dealers aren't used to doing.

The dealers' intended approach is likely not to kill off their customers. I'm willing to bet they simply don't realize what to look out for.