There is probably is not one.
Think about it there, is no software feed back connection from printer to computer, ecpt for paper jams and that type of malfunction
Even those that show such a device- e.g. EPSON- it is a fudge that simply counts the number of pages passing through the printer.
Obviously if the pages have on the one hand a letterhead and ten lines of text- then the ink usage will be far less then full blown A4 photo's
Even though a given number of sheets have passed through.