Starfrit slim glass kitchen scale is my fav. It is reasonably accurate. The question is how accurate does a scale need to be? Well for most of us not very a few grams here and there is not going to matter much. The feature that does matter for most is repeatability the same weight should always read the same thing over and over.

I think breeders need to have accurate weights and therefore need to spend more on better scales, typically shipping scales or lab scales. Kitchen scales are often a few grams (1-3) here or there but that is likely close enough. Detailed specs will show the precision of the scale.

for example mine,
http://www.amazon.com/Starfrit-09375...im+glass+scale
(mine was 1/2 price on sale this is too much IMO for this scale)
accurate to 1gm up or down.

higher accuracy
http://www.uline.ca/BL_2210/Dymo-Postal-Scale
You pay for that 0.1gm up or down accuracy. I would say only breeders need be concerned with accuracy as they need to deal with different scales rather than only one.