I have the Pro3800, again A2. It is more economic to run than the R2400 because the ink is about half price compared to the smaller carts. Also The Epson A2 Premium Glossy photo paper specific to this printer is much cheaper and can be cut to A3 or A4.

It is a bit like owning a Rolls Royce, if you have to ask about running costs, you cannot afford it.

I use mine for A2 CAD drawings, so it is a necessary buy for me. I would not change it, except for another one.

I had an R2400, the only problem is that eventually it will have to go back to Epson to have the felt pads replaced. That cost me about Ł130 ish. (ouch). In the Pro3800, the waste cart is replaceable by the user and is only Ł13 or so. Much better idea,