Porpo Calculator
price: N1500
what people say about it: it is a very poor product it has a slow response. it does not save formulars unlike its counterpart
rating: 3 dislike
Casio Calculator (Natural Display)
price: N4000
what people say about it: It is the best type of calculator, it has a very fast response and it saves mathematical formulars. it is easy to operate
rating: 10 like, 5 dislike