I always use only original ink for our printers. I have already made negative experiences with foreign inks. This set of Epson is the quality of her very well. Photos can be printed in great quality. (Only on Epson paper, I had paper from a different manufacturer, because the photos were rather poor.)
But what Epson thinks a set without the required photo cartridge offer probably remains their secret. If I order a set, I assume that all necessary cartridges are available.
With the quality of this cartridge (avoidable) deficiency has nothing to do.