Digital BW, The Print

I want to do more printing in b&w without spending $900 for a printer. 
I am using a Cannon MX700 right now. I have an Epson R200 and I found a 
place on line that will sell me carts that will change the printer to 
dedicated b&w. About $80 for the carts and $80 for fluids to clean it. 
The question I have about the Epson, is it a good enough printer to put 
the money into it? What else is out there?