A useful product but ordered too early

There are no complaints about the product itself: toner for laser printer B / DCP-7070DW. It is not cheap but enables quality copies, and about 2,500 copies as specified by the manufacturer. Amazon offers the best market prices, with free shipping. There has against a background of complaints about the Brother printer that requires this toner TN 2220. It is the printer that told me he had to change the toner. After audit, there were only 750 copies made on a theoretical total announced in 1000 (the cartridges supplied with the machine into first use only allow a level of 1000 copies in theory). The impressions are always good and quality, but the machine indicates a large window every time the computer starts or the urgent need to change the toner. In reality, there is a toner refill on the sensor that triggers such an incomplete message after using the product. It will be understood that it is for the Brother society to change by client users toner cartridges before they are really empty, which improves profits but not our wallets. We can talk about planned obsolescence. This is valid for both laser printers inkjet. This policy is shocking and must be denounced. One can find on the net (difficult) articles that explain this poor scam that most manufacturers indulge. One can find on the internet companies that show you how you can change yourself some parts of the cartridge to eliminate the role of the sensor. The curious can type on a search engine: "Resetting the toner cartridges Brother TN2220.flv" and learn about the site kittoner.
Hopefully this type of comment using Brother, and other manufacturers to more honesty with respect to their customers!