What's even nicer is that the CIS is a legit component of the printer. Hence it's part of the warranty.
Well, my warranty card requires me to buy epson bulk inks. But the epson bulk inks are surprisingly reasonably priced. So I don't mind.
If EPSON's not your cup of tea, you may want to check on BROTHER.
They also released a CIS printer:
Multi-Function Centres - DCP-T300 | Brother