The product is very inexpensive and well replaced the original toner cartridge. But sensational, the service provider of the Prestige Cartridge: Had the cartridge as a precautionary measure only bought as a reserve, so that I have, if necessary, the same replacement available to Austauch. Ers significantly after the statutory withdrawal First I opened the hermetically sealed envelope for the exchange and had thereby determine that a wrong, not right cartridge was in it. However, I have now received the correct cartridge without any problem and did not even pay for return postage. Thus an exceptional customer friendliness required before the special mention! Could not be better! Thank you!