I would have thought that, but about a year ago I have replaced my old kitchen scale with a 1-gram-resolution with a kitchen scale having 0.1-g resolution.

This kitchen scale was cheap, perhaps $10, and it is made by some no-name Chinese company, but despite that it has proved to be much more accurate than I had expected.

I have checked it with various standard weights between 5 gram and 500 gram, and all of them were displayed correctly, usually with no more than 0.1 g difference. At most there may have been a 0.2 g error once. Most of the standard weights were displayed exactly. I assume that the kitchen scale is calibrated in the factory with a standard weight, and it has good linearity, so it is expected that if one weight is displayed correctly, all the others will also be correct. So what is significant is that it has not drifted since the factory calibration, not even after more than a year later, because I have rechecked it.

The higher resolution has been very helpful with some things that I weigh every day. For instance, when I weigh every day with it 50 grams of something and 125 grams of something else, both being taken for 1-kilogram packages, I can be pretty certain that the first package will suffice for 20 days and the second package will suffice for 8 days, and in the last day for each package I will still use the normal quantity of that product.

With the previous lower resolution kitchen scales, the accumulated 1-gram errors were enough so that in the last day there would remain an abnormal amount of product in the package.

The only disadvantage of the higher-resolution kitchen scale it that it can weigh only up to 3 kg, while the previous kitchen scale could weigh up to 5 kg. However, I normally cook only for myself, therefore I very rarely need to weigh something above 1 kg, so the lower maximum limit did not matter.

I usually need to tare on much heavier weights than what I actually measure, like cooking pots. 5 kg max weight comes in handy for that.