The rub CAN be that the cart in the printer when you buy it might not be FULL. Some here have reported this scheme.
I've got to say that my experiences with "generic" ink carts hasn't been zackly sterling. I bought two black carts for the same price as one Epson cart. Each cart lasted half as long as the Epson. Perhaps it was the supplier, and that WAS a couple of years back.
Anyone have really good luck with generic carts? Where did you get them?
Michael
It makes sense although I am accumluating a lot of printers.