Fast and reliable delivery by amazon.Nach some problems with other cartridges (cartridge (chip) is not recognized, drops, bad color image) I am excited about the Hainsberger cartridges. Unpacking-plugging-Print - at about 80% cheaper than the original cartridges. Level indicator works. The brilliance is good. I'm going on long-term experience report ... I hope that all cartridges as reliable and the print head is not clogged.