The Epson T6037 is a huge cartridge and our manufacturers were excited to offer us a reasonably priced alternative that does not skimp on the quantity of ink provided. This refilled alternative to the original Epson C13T603700 still contains an amazing 220ml of dye based light black ink and has the same estimated page yield. Compatible with the Epson Stylus Pro 7880 and all of the other printers listed on this page, there is no cheaper alternative available for your printer. Like all of our compatible/remanufactured ink cartridges this alternative to the genuine Epson C13T603700 comes with a 100% satisfaction guarantee.