I purchased the DCP-L2550DW to replace my old Brother MFC model, and started using it about a month ago. Since then, I blew through the cartridge that came with it and now almost through the second TN760 high yield. My costs for ink went up with this purchase, but calculated that the extra 400 page yield claimed would make up for it. As of now, I am yielding less than what I was previously and spending more!