Price, delivery time, and first impressions were very positive. Unfortunately, it was the first impression. The MB451 multifunction machine began to print, but reported the alleged lack of black cartridge. After a few printed pages (at 100) the device no longer printed, but remained with the error message, after which the cartridge missing, inoperable. After replacing the original cartridge of the initial device was running again with no error message. So inexpensive Peach PT352 Toner also is without function it is unfortunately useless. The assessment by a star is therefore incorrect because an unusable product deserves no star. The complaint with return and repayment of EUR 15.70 proceeded quickly and efficiently.