The original toner (MFC-L2750DW) that came with the printer lasted less than 500 pages. I was planning to replace it with an original Brother TN-770, but it cost over $110 (almost 45% of the cost of the printer itself). So I took a chance with this generic brand and it works great. The software determined that it was not an original Brother cartridge, but I didn't care. Not sure how long this toner will last, but so far so good. The print quality is also excellent.
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