Bought a pocket one for ~$20 shipped and got it today. Advertised for +/-0.1 grain, actually it's +/-0.2 grain, and the "standard weight" included for calibrating is not in our planet's standard... Good thing is it's pretty stable and still accurate (sneak to the nice and expensive scale----+/-0.0001gram----in the office to compare...). So I'll just keep it :).