The price is of course unbeatable. The cartridges are individually sealed and delivered vacuum packed. An advantage because I do not ever have to replace all at the same time.
After inserting my printer (model: Epson Stylus Office BX320FW) wanted these only do not recognize. Once cycle power has helped here - the cartridges were detected by the system and displayed in full.
The first prints were not as good. I had several times the nozzle check, perform the Print Head Cleaning and Print Head Alignment, until I had a streak-free, clean print.
For this I subtract a star. However, this is also a point that I consider to be the lesser evil, if I look at the prices of the original cartridges.
I print out images rarely. In one experiment the other day, but I was pleasantly surprised. The picture came out only slightly streaky. Texts look fabulous, however - that is enough for my needs.
With Patronenn I am thanks to this huge package now first supplied. But when I need new, I will certainly order again. From me a clear recommendation!