Well, keep in mind that the digital scale you provided the link to has a 'tolerance' of 0.2 gr--which I believe is plus-or-minus two tenths grain. That ES of four tenths is more than I care to have for basic accuracy.
There have been several threads here over the years about the disadvantages of cheaper digital scales. Generally speaking, those were digital scales that sold for perhaps $30.00 without shipping, but not as low as the one you reference here. In the site discussions, the primary issue with cheaper electronic scales has been that the circuitry does not apparently provide for compensation as the batteries discharge, and that they do not provide for, or include, a DC converter for plugging in. Then, there is the breakdown factor....
But, at $12.99 each, you could buy three or four and either average their weight variances, or simply use one at a time until they broke down. Or, check out the digital scale at E.ArthurBrown & Company (use google to find the link.) I think that one comes with a DC converter--and it is sold by a reputable shooting enthusiast.
Similarly, there have been numerous threads about the issues with using Lee scales successfully. Googling in this forum ought to turn up several threads on it, including ones that include the hints for using them successfully. Personally, I find my Lee scale to be accurate and fast--but I also use a charge bar, so that my weights are pretty close to begin with. Nonetheless, enough reloaders here, ones whose opinion I value, have taken an opposite viewpoint. Many of us have upgraded to, for example, the RCBS (or whoever) 500--but I don't know any of us who would use a $12.99 digital scale in place of the Lee.
Jim H.