We have inserted this cartridge 2 weeks prior to our printer Brother DCP 7055 and printed a maximum of 200 pages. He showed for the first time change / empty cartridge to cartridge. This we ignored of course, but after another 100 pages of expression is already weaker and I think that I need to change the cartridge after less than 400 pages. We know that so exactly because we have the same time as replacing the cartridge open a new package of copy paper with 500 sheets, by this package are still mind. 100 sheets available. Therefore, I see this as a rip-off of the manufacturer and can only warn against buying any of these products there .. Normally I should forgive no star.