That "info" about the ink price seems a bit... vague to me. What kind of volume are we talking about? Did you actually check the price at the local store?
Anyway, Jeffrey Chavez6 gave you solid advice. If those ink prices end up forcing you to live on bread and water, you always have this option 😬 :
http://www.ebay.com/sch/i.html?_odkw...l+ink&_sacat=0
Just double-check compatibility first and ask the seller if they've confirmed the ink works with the L210 / L220.
Personally, I use third-party ink for my Canon CISS and they're great—zero issues. As for that Epson, nobody here has shared any real-world experience yet, and since I haven't seen it in person, I can't say much. Is it a good deal for high-volume color printing? Yes. Does it have competition for that specific workflow? Not really. Epson is basically the only one coming with a factory-installed CISS; everyone else requires some sort of aftermarket modification. That’s why it’s pricier upfront...
It’s pretty much the only inkjet worth buying if you care about cost. With any other model, you'll go broke even using compatible cartridges because the page yield is pathetic. Unless, of course, you plan on buying a standard printer and installing a CISS later.
http://www.cissprinter.com/For example, I picked up a Canon MG5550 and ordered a CISS from eBay, which is where I get my ink too. The printer was under $167, the CISS was $67, and it runs fine... though I did have a hell of a time with the installation—I literally had to cut through the printer's plastic casing. On some other models, it's smoother; you just snap it in. You can save some money that way, but it won't be half off. Honestly, the better move is to just buy the L220 right out of the gate. When I was shopping around, they weren't even available yet...
And finally, obviously, having separate tanks or cartridges for each color is better because colors deplete at different rates, so you always end up wasting a bit... But we're talking about original cartridges there, which don't make sense for you since you'd go bankrupt with that much printing to do anyway.