Please don’t pay much attention to the price of good in China. BTW, there are a standard, which you buy a better thing or the goods which just meet your need. In the future you can dispose the bad one or keep the good one, however you will so boring to put away the ji lei.
As to the electronic dictionary, which you really need, although you don’t need the function of pronunciation, you should need a better one because the more the function of dic, the more word in the dic.
For example, my dic is wen qu xin PC505, in fact there are no bid gap between the price.