Buy the most suitable type of paper to use and the printing device you use can mean not only better print quality but also significant savings in terms of paper consumption, toner usage and wear and tear printer or multifunction copier.
Meanwhile: the paper is sold in reams, usually from about 500 sheets, or in Legal Scanning in Orlando, large boxes containing up to 2500 sheets. Obviously, a first saving action is to evaluate its consumption and purchase accordingly: large quantities allow to reduce the unit costs of shipping.
The commercial format for ISO 216 is based on the German standard DIN 476: the initial format of the paper is a rectangle measuring 1 square meter in size of 841 x 1189 mm. By cutting this format in half for the longest side, all subsequent and lower measurements are obtained: A1, A2, A3 and A4.