Hi,Im interested in your product , but i have some questions: 1- how much does one package of a4 paper costs? (2500 a4 papers)2-What is your most cheapest a4 product's most certain price? 3- how much does a 80 grams plotter roll copy paper certainly costs? We are using three types of different rolls which are : 914 mm , 617 mm , 750 mm and all the rolls are in the same lenght of 100 meters Show More