Just as a potential option for some people.
E.g. I live in an area where there is a lot of chemical industry. They obviously have a lot of scales, and usually they replace them every 10-15 years.
So there is potential for older professional scales at a very low price (for what you get).
You just have to inform yourself, where they do sell the old ones.
Usually they sell them in bulk to another company, which then sells these individually.
The good thing is also that these scales were regularly revisioned by the manufacturer.
E.g. where I live, you get a professional Mettler scale (accuracy 0.1mg or better) for $200-300. I know still maybe a lot for many people here. But I bought one, as I plan to dose some 5-MeO-DMT. And the scale I bought on amazon before, was just way too inaccurate (although it is a mg scale, it has an accuracy of +/-5mg)
For example, my good one, for which I paid $250, has an accuracy of +/-20ug (yes, ug, not mg)
Lol, when I think about it, I could almost dose pure LSD with it...