I have a cheap digital scale accurate to 0.01 grams (I forget the name and too lazy to go down to basement to verify). I think I paid around $40 but I can select it to grains. I bought it before reloading to measure medicine for fish. It worked fine but I later discovered it doesn't function well after being on for a few minutes. I wanted 4.2gr and the damn scale started to fluctuate wildly. 4.2gr maybe 3.8 or up to 4.9 sometimes. I was pissed! I bought a cheap RCBS analog scale and verified that my Dillon powder charge is dispensing accurately. The cheap RCBS analog scale works well but not my cheap digital scale. LOL!
Moral of my story is, I don't trust cheap digital scale anymore.