Reddit mentions of Tanita 1479J2 Mini Scale

Depends on your budget. You would have a hard time finding a worse scale than an American Weighs Scale, made in China using the least accurate electronic weight sensor in the world.

This one from Amazon is quite a step up, but still very inexpensive.

The world's best scales are made in Japan with the world's best weight sensors, also made in Japan. This Tanita 200g capacity is an excellent scale. I own both. Buy calibration weights for either. The cheaper one will calibrate with anything from 500grams down, (in ten gram increments) but the Tanita will only calibrate with 200 grams. Buy the 2 100s that Amazon suggests. You can calibrate both scales with those.

A simple test to show the sensitivity of a scale is to see how low of a weight it will register. Cut some pieces of paper into half inch squares. Each will weigh about 0.01g. Starting with a calibrated and zeroed scale, place a single piece of paper on the tray and see if it registers. Most cheap scales, including yours and the $17 one I recommend will not move from zero until you get to at least 0.04g, and then they must be placed all at once. The Tanita will register each piece of paper as you add them.

Remember that the electronic weight sensor in any portable scale is susceptible to to permanent damage if exposed to a very strong magnetic field like those from the silly rare earth magnets that many people think are useful to show silver purity. (They don't anyway.)

I recommend the cheaper 500g capacity scale because it has the ability to do a specific gravity test on ten ounce bars and coins. And with a piece of that size, you don't need 0.01g accuracy anymore either, 0.1 will do the trick.

Amazon has them for $68.99 with free shipping.