The first cartridge lasted about 10 copies before it started making a grinding noise. The second seems to be ok so far, it has about 30 copies on it. We waited too long before using them, so there are no returns. I think next time we will buy a branded product. Update 10/24/16: After I posted my review, the company contacted me and apologized for the problems. They offered to send a replacement, which they did. Haven't used either cart, but when a company goes out of their way to fix a bug, what more could you ask for. Many thanks for your effort.
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