This document is a proforma or invoice for a PC system from Colegio Nacional "Dario Guevara M." listing the components, their individual prices, subtotals, tax amounts, and total price. It includes a case, motherboard, processor, memory, hard drive, DVD writer, monitor, printer, keyboard/mouse/speakers, and webcam. The total price before tax is $495.50 and the total with tax of $59.38 is $544.88.